end2end test cleanup

[menghanl]

File end2end_test.go is over 6000 lines of code and needs cleanup, including:

• split into multiples files (e.g. creds_test.go for credentials related)
• separate utilities with real tests

[stale[bot]]

This issue is labeled as requiring an update from the reporter, and no update has been received after 7 days. If no update is provided in the next 7 days, this issue will be automatically closed.

[easwars]

Ping to mark this unstale :)

[easwars]

Cleaned up a few, not all. Closing this for now.

[dfawley]

Let's leave this open. end2end_test.go is now over 7500 lines and still needs a cleanup.

[zasweq]

Over 8000 lines now, still needs cleanup.

[ginayeh]

Down to 6.5k. Still needs a cleanup.

[v-sreejith]

Hi @ginayeh. I would like to contribute here.

[arvindbr8]

Hey @v-sreejith, appreciate your interest here. We might have wrongly labeled this as help wanted. There are some ongoing efforts from our team in cleaning this up, which requires some coordination.

Please feel free to ping us on other issues that might pique your interest.