When GetPolicy is called within the scaling handler, the index
table was being used to populate the reply index irregardless of
whether the policy was found or not. This change fixes that
behaviour so that the policy modify index is used when the policy
lookup is successful.

docs: fix typo in the comment

comment in the source code for Logger: thhe -> the

The `TestHTTPServer_Limits_Error` test never starts the agent so it
had an incomplete configuration, which caused panics in the test. Fix
the configuration.

The PR #11555 had a branch name like `f-ui-*` which caused CI to skip
the unit tests over the HTTP handler setup, so this wasn't caught in
PR review.

Merge release 1.2.2 branch

feat:   add consul and vault links to global header

In the system scheduler, if a subset of clients are filtered by class,
we hit a code path where the `AllocMetric` has been copied, but the
`Copy` method does not instantiate the various maps. This leads to an
assignment to a nil map. This changeset ensures that the maps are
non-nil before continuing.

The `Copy` method relies on functions in the `helper` package that all
return nil slices or maps when passed zero-length inputs. This
changeset to fix the panic bug intentionally defers updating those
functions because it'll have potential impact on memory usage. See
https://github.com/hashicorp/nomad/issues/11564 for more details.

In the system scheduler, if a subset of clients are filtered by class,
we hit a code path where the `AllocMetric` has been copied, but the
`Copy` method does not instantiate the various maps. This leads to an
assignment to a nil map. This changeset ensures that the maps are
non-nil before continuing.

The `Copy` method relies on functions in the `helper` package that all
return nil slices or maps when passed zero-length inputs. This
changeset to fix the panic bug intentionally defers updating those
functions because it'll have potential impact on memory usage. See
https://github.com/hashicorp/nomad/issues/11564 for more details.

Add `ui` block to agent configuration to enable/disable the web UI and
provide the web UI with links to Vault/Consul.

As of VirtualBox 6.1.28, host-only networks are restricted to
`192.168.56.0/21` by default, so spinning up the Vagrant boxes with
secondary networks fail with an error `E_ACCESSDENIED`.

Update the IP configuration of the Vagrant boxes to fall within the
allowed range so that we don't need to ask developers from the
community to make VirtualBox configuration updates outside of their
normal Vagrant use.

docs: clarify vault.token only required on servers

This change modifies the Nomad job register and deregister RPCs to
accept an updated option set which includes eval priority. This
param is optional and override the use of the job priority to set
the eval priority.

In order to ensure all evaluations as a result of the request use
the same eval priority, the priority is shared to the
allocReconciler and deploymentWatcher. This creates a new
distinction between eval priority and job priority.

The Nomad agent HTTP API has been modified to allow setting the
eval priority on job update and delete. To keep consistency with
the current v1 API, job update accepts this as a payload param;
job delete accepts this as a query param.

Any user supplied value is validated within the agent HTTP handler
removing the need to pass invalid requests to the server.

The register and deregister opts functions now all for setting
the eval priority on requests.

The chan...

Merge release 1.2.1 branch

Version 1.2.1

The QEMU driver allows arbitrary command line options, but many of
these options give access to host resources that operators may not
want to expose such as devices. Add an optional allowlist to the
plugin configuration so that operators can limit the resources for
QEMU.

docs: add global query param to API job deregister endpoint.

terraform: update installed version used to 1.0.11.

While it *is* clarified toward the bottom of this page, I've seen people
go to great lengths to configure tokens for clients anyway, so I think
it's worth noting on the parameter's docs as well.

* build(deps): bump github.com/hashicorp/cronexpr in /api

Bumps [github.com/hashicorp/cronexpr](https://github.com/hashicorp/cronexpr) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/hashicorp/cronexpr/releases)
- [Commits](https://github.com/hashicorp/cronexpr/compare/v1.1.0...v1.1.1

)

---
updated-dependencies:
- dependency-name: github.com/hashicorp/cronexpr
  dependency-type: direct:production
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

* go mod tidy
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tim Gross <tim@0x74696d.com>