Skeleton setup for struct method generate for Copy, Equals, Diff, etc. This
commit gives a starting point for building out single method generator tools
that can all get called during `make generate-all`.

* Add remaining pprof profiles to debug dump
* Refactor pprof profile capture
* Add WaitForFilesUntil and WaitForResultUntil utility functions
* Add CHANGELOG entry

docs: update cl with missing entries

consul/connect: Validate uniqueness of Connect upstreams within task group

This PR adds validation during job submission that Connect proxy upstreams
within a task group are using different listener addresses. Otherwise, a
duplicate envoy listener will be created and not be able to bind.

Closes #7833

e2e: fix a couple recent e2e bugs

This PR changes the e2e helper thingy to set -detach option
when registering a job with the CLI instead of the API. This is
necessary for jobs which never become healthy, as the deployment
never finishes for failing jobs and the command never returns,
causing the test to timeout after 10 minutes.

This PR fixes a bug introduced in a refactoring

https://github.com/hashicorp/nomad/pull/10764/files#diff-56b3c82fcbc857f8fb93a903f1610f6e6859b3610a4eddf92bad9ea27fdc85ec

where task level service checks would inherent the task name
field, when they shouldn't.

Fixes #10781

Running the `client/allocrunner` tests fail to compile on macOS because the
CNI test file depends on the CNI network configurator, which is in a
Linux-only file.

consul/connect: in-place update service definition when connect upstreams are modified

This PR fixes a bug where modifying the upstreams of a Connect sidecar proxy
would not result Consul applying the changes, unless an additional change to
the job would trigger a task replacement (thus replacing the service definition).

The fix is to check if upstreams have been modified between Nomad's view of the
sidecar service definition, and the service definition for the sidecar that is
actually registered in Consul.

Fixes #8754

When `network.mode = "bridge"`, we create a pause container in Docker with no
networking so that we have a process to hold the network namespace we create
in Nomad. The default `/etc/hosts` file of that pause container is then used
for all the Docker tasks that share that network namespace. Some applications
rely on this file being populated.

This changeset generates a `/etc/hosts` file and bind-mounts it to the
container when Nomad owns the network, so that the container's hostname has an
IP in the file as expected. The hosts file will include the entries added by
the Docker driver's `extra_hosts` field.

In this changeset, only the Docker task driver will take advantage of this
option, as the `exec`/`java` drivers currently copy the host's `/etc/hosts`
file and this can't be changed without breaking backwards compatibility. But
the fields are available in the task driver protobuf for community task
drivers to use if they'd like.

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.35 to 7.0.36.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/7.0.35...7.0.36

)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [ws](https://github.com/websockets/ws) from 7.3.1 to 7.4.6.
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](https://github.com/websockets/ws/compare/7.3.1...7.4.6

)
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

client/fingerprint/java: improve java version string regex matching

This PR improves the regular expression used for matching the java
version string, which varies a lot depending on the java vendor and
version.

These are the example strings we now test for:

java version "1.7.0_80"
openjdk version "11.0.1" 2018-10-16
openjdk version "11.0.1" 2018-10-16
java version "1.6.0_36"
openjdk version "1.8.0_192"
openjdk 11.0.11 2021-04-20 LTS

The last one is a new test added on behalf of #6081, which is
still broken on today's CentOS 7 default JDK package.

openjdk 11.0.11 2021-04-20 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.11+9-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.11+9-LTS, mixed mode, sharing)

==> Evaluation "21c6caf7" finished with status "complete" but failed to place all allocations:
    Task Group "example" (failed to place 1 allocation):
      * Constraint "${driver.java.version} >= 11.0.0": 1 nodes excluded by filter
    Evaluation "2b737d48" waiting for additional capacity to place remainder

Fixes #6081

consul: make failures_before_critical and success_before_passing work with group services

This PR fixes some job submission plumbing to make sure the Consul Check parameters
- failure_before_critical
- success_before_passing

work with group-level services. They already work with task-level services.