OLS-1980: Add autodiscovery for indexID value

[syedriko]

Description

This PR makes the default value of the RAG indexID an empty string, which makes it unnecessary to know the exact value of the index ID the Faiss RAG database was built with.
This PR depends on openshift/lightspeed-service#2626.

Type of change

• Refactor
• New feature
• Bug fix
• CVE fix
• Optimization
• Documentation Update
• Configuration Update
• Bump-up dependent library

Related Tickets & Documents

• Related Issue #
• Closes # https://issues.redhat.com/browse/OLS-1980

Checklist before requesting a review

• I have performed a self-review of my code.
• PR has passed all pre-merge test jobs.
• If it is a core feature, I have added thorough tests.

Testing

• Please provide detailed steps to perform tests related to this code change.
• How were the fix/results from this change verified? Please provide relevant screenshots or results.

[openshift-ci-robot]

@syedriko: This pull request references OLS-1980 which is a valid jira issue.

In response to this:

Description

This PR makes the default value of the RAG indexID an empty string, which makes it unnecessary to know the exact value of the index ID the Faiss RAG database was built with.
This PR depends on openshift/lightspeed-service#2626.

Type of change

• Refactor
• New feature
• Bug fix
• CVE fix
• Optimization
• Documentation Update
• Configuration Update
• Bump-up dependent library

Related Tickets & Documents

• Related Issue #
• Closes # https://issues.redhat.com/browse/OLS-1980

Checklist before requesting a review

• I have performed a self-review of my code.
• PR has passed all pre-merge test jobs.
• If it is a core feature, I have added thorough tests.

Testing

• Please provide detailed steps to perform tests related to this code change.
• How were the fix/results from this change verified? Please provide relevant screenshots or results.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign bparees for approval. For more information see the Code Review Process.

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

Needs approval from an approver in each of these files:

• OWNERS

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

[syedriko]

/retest

[openshift-ci]

@syedriko: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/bundle-e2e-4-19	a56c4d1	link	true	/test bundle-e2e-4-19

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.