[2.12.0] Ensure compatibility with admin credential changes in 2.12.0 release

[derek-ho]

Is your feature request related to a problem?

Starting in 2.12.0, security demo config install script will require an initial admin password. opensearch-php CI should work with these new changes

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[derek-ho]

Seems like this repo's CI is mostly run without security:

• https://github.com/opensearch-project/opensearch-php/blob/main/.github/workflows/test_unreleased.yml#L33
• https://github.com/opensearch-project/opensearch-php/blob/main/.github/workflows/test.yml#L156C38-L156C119

[derek-ho]

@dblock @VachaShah can you folks help me confirm that my understanding is correct and no changes need to made in this repo to support the admin credential changes?

[dblock]

@derek-ho I only worked a little bit here, let's try to ask @shyim ?

[DarshitChanpura]

@shyim Are we good to close this issue?

[shyim]

We don't use in the tests security right now. So we can close this