Don't re-use namespaces in e2e-tests

[ptnapoleon]

What does this PR do?

• [ ] Adds new functionality
• [ ] Alters existing functionality
• [ ] Fixes a bug
• [ ] Improves documentation or testing

Please briefly describe your changes as well as the motivation behind them:

• The e2e-tests have been timing out in an AfterSuite DeferCleanup waiting for the test namespace to be deleted. I've been able to reproduce it in earlier commits that weren't having the problem. The deletes are succeeding, the namespace is empty, has no finalizers, and has a deletionTimestamp. I can't seem to figure out why it will still hang around even with a 10 minute timeout. As a result, I'm giving up on properly cleaning it between Suites, and instead are using uuids in the namespace, so we don't re-use across Suites

Code Quality Checklist

• [ ] The documentation is up to date.
• [ ] My code is sufficiently commented and passes continuous integration checks.
• [ ] I have signed my commit (see Contributing Docs).

Testing

• [ ] I leveraged continuous integration testing
  • [ ] by depending on existing unit tests or end-to-end tests.
  • [ ] by adding new unit tests or end-to-end tests.
• [ ] I manually tested the following steps:
  • x
  • [ ] locally.
  • [ ] as a canary deployment to a cluster.

[datadog-datadog-prod-us1[bot]]

Datadog Report

Branch report: philip/flaky-e2e-test Commit report: 83a1b0a Test service: chaos-controller

:white_check_mark: 0 Failed, 720 Passed, 2 Skipped, 11m 52.74s Wall Time

[ptnapoleon]

45s timeout didn't help at all.

[ptnapoleon]

I'll try reverting the changes to see if they could actually be related