SPL-290972: add connection env for ansible to pick up

[jmsplunk]

Description

Add a new env KVSERVICE_CONNECTION_STRING so that during the splunk instance initialization, the splunk-ansible can pick it up and update the server.conf
ansible PR

Key Changes

Add the KVSERVICE_CONNECTION_STRING in every pod env
Add the get connection string function which will return the service dns and port.

Testing and Verification

Deploy the new operator

root@ip-10-236-5-61:~/splunk-operator# kubectl describe pod splunk-test-kvstore-standalone-0 -n splunk-operator | grep kvservice
      KVSERVICE_CONNECTION_STRING:                   splunk-kvservice.splunk-operator.svc.cluster.local:443

Build the splunk image using the private splunk-ansible build

root@ip-10-236-5-61:~/splunk-operator# kubectl exec -n splunk-operator splunk-test-kvstore-standalone-0 -- cat /opt/splunk/etc/system/local/server.conf | grep -A2 "\[kvstore\]"
[kvstore]
externalManagedKVStoreConnectionString = splunk-kvservice.splunk-operator.svc.cluster.local:443

Related Issues

Jira tickets, GitHub issues, Support tickets...

PR Checklist

• Code changes adhere to the project's coding standards.
• Relevant unit and integration tests are included.
• Documentation has been updated accordingly.
• All tests pass locally.
• The PR description follows the project's guidelines.

[sgontla]

I think, for now, we can return nil?

[jmsplunk]

I think its fine to have some dummy value returned since we are not merging it to main branch and its easier for our testings

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[jmsplunk]

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[rlieberman-splunk]

Is there a corresponding splunk-ansible PR? Or does this functionality already exist there?

[jmsplunk]

@rlieberman-splunk this is the PR. I linked in the testing part i will move it above to make it more visiable