This extracts some common API-idiosyncracy-handling patterns from model serialisers into properties that are processed by the application serialiser:

* arrayNullOverrides converts a null property value to an empty array
* mapToArray converts a map to an array of maps, using the original map keys as Name properties on the array maps
* separateNanos splits nanosecond-containing timestamps into millisecond timestamps and separate nanosecond properties

docs: clarify e2e tests

* nomad: canonicalize alloc shared resources to populate ports

* ui: network ports

* ui: remove unused task network references and update tests with new shared ports model

* ui: lint

* ui: revert auto formatting

* ui: remove unused page objects

* structs: remove unrelated test from bad conflict resolution

* ui: formatting

* move CNI install/podman config to build-time
* move DNS config to userdata
* consolidate apt updates for performance

Podman driver: Add support for signal task.

Update runc to v1.0.0-rc92

Just a smattering of attempted improvements as I read through this
again. Some of my goals:

- Tried to add more high level info to the intro to set the context
- Clarify the difference between *test* dev and *agent* dev workflows
- Add -timeout to provisioning step because cable Internet is lol

test: deflake consul e2e tests

Modernize test patterns by removing gomega and avoiding the mock_driver.

If a core job fails more than the delivery limit, the leader will create a new
eval with the TriggeredBy field set to `failed-follow-up`.

Evaluations for core jobs have the leader's ACL, which is not valid on another
leader after an election. The `failed-follow-up` evals do not have ACLs, so
core job evals that fail more than the delivery limit or core job evals that
span leader elections will never succeed and will be re-enqueued forever. So
we should not retry with a `failed-follow-up`.

The `regionForJob` function in the HTTP job endpoint overrides the region for
multiregion jobs to `global`, which is used as a sentinel value in the
server's job endpoint to avoid re-registration loops. This changeset removes
an extraneous check that results in errors in the web UI and makes
round-tripping through the HTTP API cumbersome for all consumers.

Change 'license set' to 'license put' to reflect correct syntax

changelog: add entry for GH-8142.

This removes repeated instances of this warning from test logs:
You created a second Pretender instance while there was already one running.

api: add node purge SDK function.

docs: update allocation metrics

docs: update docs to reference new Docker driver image_pull_timeout params.

driver/docker: allow configurable pull context timeout setting.

skip podman e2e

Release 0.12.3