* Return evalID if `-detach` flag is passed to job revert

The changelog entry for #13340 indicated it was an improvement. But on
discussion, it was determined that this was a workaround for a
regression. Update the changelog to make this clear.

In addition to jobs, there are other objects in Nomad that have a
specific format and can be provided to commands and API endpoints.

This commit creates a new menu section to hold the specification for
volumes and update the command pages to point to the new centralized
definition.

Redirecting the previous entries is not possible with `redirect.js`
because they are done server-side and URL fragments are not accessible
to detect a match. So we provide hidden anchors with a link to the new
page to guide users towards the new documentation.
Co-authored-by: Tim Gross <tgross@hashicorp.com>

These flags were not being used because GNUmakefile overwrites them with
another value. We also don't want to set `-s -w` since they remove
information that is important for production debug.

In other projects this variable is used to override the default `-dev`
prerelease that is set even if `VersionPrerelease` is empty, but in
Nomad this check is never actually done because this conditional in
`version/version.go` is always false:

```go
func GetVersion() *VersionInfo {
  // ...
  rel := VersionPrerelease
  // ...
  if GitDescribe == "" && rel == "" && VersionPrerelease != "" {
    rel = "dev"
  }
  // ...
}
```

This seems like some leftover from a previous release process, but I
decided the leave the code as is.

* website: fix redirects with fragments

Vercel redirects don't support fragments in relative destination paths,
so an absolute URL must be specified instead.

* website: fix Vercel redirect documentation link

Signed-off-by: Grant Griffiths <ggriffiths@purestorage.com>

* template: improve default language for max_stale and wait
Co-authored-by: Michael Schurter <mschurter@hashicorp.com>

build: rearrange go path order on windows

If PATH comes first, an older version of Go is used that cannot install
dependencies that use features of newer versions of Go, which we just
installed.

helpers: provide a few generic helper functions

This PR deprecates some functions in favor of generic alternatives.

The new functions are compatible only with Nomad v1.4+.

The old functions (nor their use) should not be removed until Nomad v1.6+.

If the node has been GC'd or is down, we can't send it a node
unpublish. The CSI spec requires that we don't send the controller
unpublish before the node unpublish, but in the case where a node is
gone we can't know the final fate of the node unpublish step.

The `csi_hook` on the client will unpublish if the allocation has
stopped and if the host is terminated there's no mount for the volume
anyways. So we'll now assume that the node has unpublished at its
end. If it hasn't, any controller unpublish will potentially hang or
error and need to be retried.

Add boolean 'guest_agent' config option for QEMU driver, which will
create the socket file for the QEMU Guest Agent in the task dir when
enabled.

docker: update images to reference hashicorpdev dockerhub organization
generate job_init.bindata_assetfs.go
Co-authored-by: Luiz Aoqui <luiz@hashicorp.com>

consul-template: Add fault tolerant defaults
Co-authored-by: Tim Gross <tgross@hashicorp.com>

`heartbeat_grace` is a `server` parameter, not a `client` parameter.

Bumps [node-fetch](https://github.com/node-fetch/node-fetch) from 2.6.1 to 2.6.7.
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/main/docs/CHANGELOG.md)
- [Commits](https://github.com/node-fetch/node-fetch/compare/v2.6.1...v2.6.7

)

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updated-dependencies:
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  dependency-type: indirect
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Bumps [ember-page-title](https://github.com/ember-cli/ember-page-title) from 6.2.0 to 7.0.0.
- [Release notes](https://github.com/ember-cli/ember-page-title/releases)
- [Changelog](https://github.com/ember-cli/ember-page-title/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ember-cli/ember-page-title/compare/v6.2.0...v7.0.0

)

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updated-dependencies:
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  dependency-type: direct:development
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Bumps [node-fetch](https://github.com/node-fetch/node-fetch) from 2.6.1 to 2.6.7.
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/main/docs/CHANGELOG.md)
- [Commits](https://github.com/node-fetch/node-fetch/compare/v2.6.1...v2.6.7

)

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- dependency-name: node-fetch
  dependency-type: indirect
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Bumps [semver-regex](https://github.com/sindresorhus/semver-regex) from 3.1.2 to 3.1.4.
- [Release notes](https://github.com/sindresorhus/semver-regex/releases)
- [Commits](https://github.com/sindresorhus/semver-regex/compare/v3.1.2...v3.1.4

)

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  dependency-type: indirect
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Bumps [lodash-es](https://github.com/lodash/lodash) from 4.17.20 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.20...4.17.21

)

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- dependency-name: lodash-es
  dependency-type: indirect
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Bumps [follow-redirects](https://github.com/follow-redirects/follow-redirects) from 1.14.5 to 1.14.8.
- [Release notes](https://github.com/follow-redirects/follow-redirects/releases)
- [Commits](https://github.com/follow-redirects/follow-redirects/compare/v1.14.5...v1.14.8

)

---
updated-dependencies:
- dependency-name: follow-redirects
  dependency-type: indirect
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Bumps [mout](https://github.com/mout/mout) from 1.2.2 to 1.2.3.
- [Release notes](https://github.com/mout/mout/releases)
- [Changelog](https://github.com/mout/mout/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mout/mout/compare/v1.2.2...v1.2.3

)

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  dependency-type: indirect
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As a performance optimization in the scheduler, feasibility checks
that apply to an entire class are only checked once for all nodes of
that class. Other feasibility checks are "available" checks because
they rely on more ephemeral characteristics and don't contribute to
the hash for the node class. This currently includes only CSI.

We have a separate fast path for "available" checks when the node has
already been marked eligible on the basis of class. This fast path has
a bug where it returns early rather than continuing the loop. This
causes the entire task group to be rejected.

Fix the bug by not returning early in the fast path and instead jump
to the top of the loop like all the other code paths in this method.
Includes a new test exercising topology at whole-scheduler level and a
fix for an existing test that should've caught this previously.

alloc_runner: stop sidecar tasks last

When deleting evaluations and allocations during a reap event, the
index table entries for evals and allocs was updated irregardless
of whether changes were made.

This change modifies the state logic so that the index table is
only modified when the corresponding table has actually been
modified. Along with matching expected behaviour, this change has
the potential to reduce the number of times blocking queries will
return without any real state change.