chore(e2e) Add options to customize vars with ENVs in cli e2e tests

[mmajerni]

Release Note

NONE

[squakez]

Backport to main as well if this is a general fix. Thanks!

[squakez]

❌ TestSyntheticIntegrationFromDeployment (1m21.39s)
      synthetic_test.go:123: 
          Timed out after 60.000s.
          Expected
              <v1.ConditionStatus>: False
          to equal
              <v1.ConditionStatus>: True

This one was failing. I've restarted the check but it does not look to be a flaky one, if you want to give a look while the second check attempt is running.

[mmajerni]

TestSyntheticIntegrationFromDeployment is located in subfolder advanced and the change is made in cli subfolder so other tests except these in CLI folder should not be affected.

[squakez]

TestSyntheticIntegrationFromDeployment is located in subfolder advanced and the change is made in cli subfolder so other tests except these in CLI folder should not be affected.

True. I see the second attempt cleared. You can disregard such a comment, thanks.