e2e: add cleanup logic to kserve tests to ensure no KnativeServing instances are present in the cluster

[lburgazzoli]

Description

How Has This Been Tested?

Screenshot or short clip

Merge criteria

• You have read the contributors guide.
• Commit messages are meaningful - have a clear and concise summary and detailed explanation of what was changed and why.
• Pull Request contains a description of the solution, a link to the JIRA issue, and to any dependent or related Pull Request.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[lburgazzoli]

Follow up for #1522

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 19.69%. Comparing base (72443c5) to head (0e2d9e8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1523   +/-   ##
=======================================
  Coverage   19.69%   19.69%           
=======================================
  Files         161      161           
  Lines       11102    11102           
=======================================
  Hits         2187     2187           
  Misses       8683     8683           
  Partials      232      232           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ykaliuta

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [ykaliuta]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ykaliuta]

I do not know if you want add #1524

[lburgazzoli]

I do not know if you want add #1524

you mean, removing the log ?

[ykaliuta]

I do not know if you want add #1524

you mean, removing the log ?

yes, but it's @zdtsw proposal.

[lburgazzoli]

I'd keep it around for a while, just to help troubleshooting things, but ideally I'd like to remove it once we found/fix the root cause