* e2e: create a v3/ set of packages for creating Nomad e2e tests
This PR creates an experimental set of packages under `e2e/v3/` for crafting
Nomad e2e tests. Unlike previous generations, this is an attempt at providing
a way to create tests in a declarative (ish) pattern, with a focus on being
easy to use, easy to cleanup, and easy to debug.
@shoenig is just trying this out to see how it goes.
Lots of features need to be implemented.
Many more docs need to be written.
Breaking changes are to be expected.
There are known and unknown bugs.
No warranty.
Quick run of `example` with verbose logging.
```shell
➜ NOMAD_E2E_VERBOSE=1 go test -v
=== RUN TestExample
=== RUN TestExample/testSleep
util3.go:25: register (service) job: "sleep-809"
util3.go:25: checking eval: 9f0ae04d-7259-9333-3763-44d0592d03a1, status: pending
util3.go:25: checking eval: 9f0ae04d-7259-9333-3763-44d0592d03a1, status: complete
util3.go:25: checking deployment: a85ad2f8-269c-6620-d390-8eac7a9c397d, status: running
util3.go:25: checking deployment: a85ad2f8-269c-6620-d390-8eac7a9c397d, status: running
util3.go:25: checking deployment: a85ad2f8-269c-6620-d390-8eac7a9c397d, status: running
util3.go:25: checking deployment: a85ad2f8-269c-6620-d390-8eac7a9c397d, status: running
util3.go:25: checking deployment: a85ad2f8-269c-6620-d390-8eac7a9c397d, status: successful
util3.go:25: deployment a85ad2f8-269c-6620-d390-8eac7a9c397d was a success
util3.go:25: deregister job "sleep-809"
util3.go:25: system gc
=== RUN TestExample/testNamespace
util3.go:25: apply namespace "example-291"
util3.go:25: register (service) job: "sleep-967"
util3.go:25: checking eval: a2a2303a-adf1-2621-042e-a9654292e569, status: pending
util3.go:25: checking eval: a2a2303a-adf1-2621-042e-a9654292e569, status: complete
util3.go:25: checking deployment: 3395e9a8-3ffc-8990-d5b8-cc0ce311f302, status: running
util3.go:25: checking deployment: 3395e9a8-3ffc-8990-d5b8-cc0ce311f302, status: running
util3.go:25: checking deployment: 3395e9a8-3ffc-8990-d5b8-cc0ce311f302, status: running
util3.go:25: checking deployment: 3395e9a8-3ffc-8990-d5b8-cc0ce311f302, status: successful
util3.go:25: deployment 3395e9a8-3ffc-8990-d5b8-cc0ce311f302 was a success
util3.go:25: deregister job "sleep-967"
util3.go:25: system gc
util3.go:25: cleanup namespace "example-291"
=== RUN TestExample/testEnv
util3.go:25: register (batch) job: "env-582"
util3.go:25: checking eval: 600f3bce-ea17-6d13-9d20-9d9eb2a784f7, status: pending
util3.go:25: checking eval: 600f3bce-ea17-6d13-9d20-9d9eb2a784f7, status: complete
util3.go:25: deregister job "env-582"
util3.go:25: system gc
--- PASS: TestExample (10.08s)
--- PASS: TestExample/testSleep (5.02s)
--- PASS: TestExample/testNamespace (4.02s)
--- PASS: TestExample/testEnv (1.03s)
PASS
ok github.com/hashicorp/nomad/e2e/example 10.079s
```
* cluster3: use filter for kernel.name instead of filtering manually
Our E2E "framework" has a bunch of features around test discovery and
standing up infra that were never completed or fully used, and we
ended up building out a large test suite that ignored all that in lieu
of Terraform-provided infrastructure for the last couple years.
This changeset is a proposal (and demonstration) for gradually
migrating our E2E tests off the framework code so that developers can
write fairly ordinary golang stdlib testing tests.
