chore(e2e): implement parallel PR testing for backstage showcase main branch

subhashkhileri commented 5 days ago

Description

Currently, PR tests for the main branch are executed sequentially, causing significant delays with 13-15 PRs in the waiting queue. Implementing a parallel testing solution using multiple namespaces to improve efficiency.

Proposed Solution

Implement parallel PR testing using namespace pools
Initially support 3-4 concurrent PR tests (expandable to 5)
Leverage existing IBM pr-os cluster.

Which issue(s) does this PR fix

https://issues.redhat.com/browse/RHIDP-4946

PR acceptance criteria

Please make sure that the following steps are complete:

[ ] GitHub Actions are completed and successful
[ ] Unit Tests are updated and passing
[ ] E2E Tests are updated and passing
[ ] Documentation is updated if necessary (requirement for new features)
[ ] Add a screenshot if the change is UX/UI related

How to test changes / Special notes to the reviewer

openshift-ci[bot] commented 5 days ago

[APPROVALNOTIFIER] This PR is NOT APPROVED

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