Support environment variables as parameter

[diegolovison]

The issue resolved by this Pull Request:

Break down the solution for #RHOAIENG-10212 into smaller PRs to facilitate review.

Description of your changes:

• Introducing the CLEANUP flag allows for optional resource cleanup before the tests. Useful while retrying the test in the OpenShift environment. The final cleanup solution will be discussed in other PR.
• The K8SAPISERVERHOST variable provides more flexibility, enabling it to be set via a command line argument, rather than being hardcoded within the test functions."
• Removed DSPA_NAME and DSPA_EXTERNAL_NAME as redundant variables, simplifying namespace handling by directly using DSPA_NAMESPACE and DSPA_EXTERNAL_NAMESPACE. This removes unnecessary duplication.
• Replaced the use of kubectl whoami --show-server for K8SAPISERVERHOST in the run_tests and run_tests_dspa_external_connections functions. This allows the user to define K8SAPISERVERHOST explicitly via command line arguments, offering better control over the testing environment, especially for air-gapped setups.
• Added deletion for DSPA_NAMESPACE and DSPA_EXTERNAL_NAMESPACE during the resource cleanup process. Ensures that all test-related namespaces are properly cleaned up.
• Renamed run_kind_tests to setup_kind_requirements and run_rhoai_tests to setup_rhoai_requirements. This better reflects their functionality as preparation steps rather than test execution steps. Testing is now decoupled from resource setup.
• Added support for new CLI options like --cleanup, --k8s-api-server-host, --dspa-namespace, and --dspa-path. This allows users to customize their test environments more dynamically when running the script.

Testing instructions

• kind is done by GHA
• RHOAI
• • Checkout https://github.com/diegolovison/ods-ci/tree/e2e
• • sh run_robot_test.sh --set-urls-variables true --extra-robot-args '-L DEBUG -i ODS-2632' --skip-oclogin

==============================================================================
[ WARN ] No Prometheus namespace found
Run Data Science Pipelines Operator Integration Tests :: Run Data ... | PASS |
------------------------------------------------------------------------------
Tests.Data Science Pipelines.Test-Run-Data-Science-Pipelines-Opera... | PASS |
1 test, 1 passed, 0 failed
==============================================================================
Tests.Data Science Pipelines                                          | PASS |
1 test, 1 passed, 0 failed
==============================================================================
Tests                                                                 | PASS |
1 test, 1 passed, 0 failed
==============================================================================

Checklist

• The commits are squashed in a cohesive manner and have meaningful messages.
• 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

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[VaniHaripriya]

/verified
/lgtm
Looks good to me, also verified the changes by running the provided command in the cluster where RHOAI is installed, and all the tests passed successfully.

Tests.Data Science Pipelines.Test-Run-Data-Science-Pipelines-Operator-E2E-T...
==============================================================================
[ WARN ] No Prometheus namespace found
Run Data Science Pipelines Operator Integration Tests :: Run Data ... | PASS |
------------------------------------------------------------------------------
Tests.Data Science Pipelines.Test-Run-Data-Science-Pipelines-Opera... | PASS |
1 test, 1 passed, 0 failed
==============================================================================
Tests.Data Science Pipelines                                          | PASS |
1 test, 1 passed, 0 failed
==============================================================================
Tests                                                                 | PASS |
1 test, 1 passed, 0 failed
==============================================================================