* e2e: move rawexec oversub tests into oversubscription e2e test suite
This PR moves two tests for raw_exec and memory oversubscription into
the oversubscription test suite, which has the necessary plumbing to
activate and restore the oversubscription configuration of the scheduler
during the test.
* cr: rename files for better readability
Just because an alloc is running does not mean nomad is ready to serve
task logs. In a test case where you immediatly read logs after starting
a task, it could be that nomad responds with "no logs found" when you
try to read logs, in which case you just need to wait longer. Do so in
the v3 TaskLogs helper function.
* e2e: remove old oversubscription test
* e2e: fixup and cleanup oversubscription test suite
Fix and cleanup this old oversubscription test.
* use t.Cleanup instead of defer in tests
* e2e: fixup oversubscription test case for jammy
jammy uses cgroups v2, need to lookup the max memory limit from the
unified heirarchy format
* e2e: set constraint to require cgroups v2 on oversub docker test
The oversubscription test expects an output that requires the client
has polled the task for stats at least once. Wait long enough to
ensure that we've polled the stats before failing the test.
