The E2E test suite for rescheduling had a few bugs:
* Using the command line to stop a job with a failing deployment returns a non-zero exit
code, which would cause an otherwise passing test to fail.
* Two of the input jobs were actually invalid but were only correctly detected
as such because of #17342
This changeset also updates the whole test suite to move it off the v1
"framework". A few test assertions are also de-flaked.
Fixes: #19076
The rescheduling test workloads were created before we had Windows targets in
the E2E nightly run. When these were recently ported to the e2e framework they
were missing the constraint to Linux machines.
Also added a little extra time to polling to avoid some flakiness on the first
run, and a minor readability adjustment to the job names.
Ports the rescheduling tests (which aren't running in CI) into the current
test framework so that they're run on nightly, and exercises the new CLI
helpers.
