Default admin password as admin

[derek-ho]

Description

Fixes the CI to pass in "admin" as the admin password if the version is >= 2.12. This is necessary since 2.12 and onwards requires an initial admin password to be set in order to run the security demo configuration.

Issues Resolved

List any issues this PR will resolve, e.g. Closes [...].

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 79.71%. Comparing base (360e88c) to head (4240ad3). Report is 11 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #234 +/- ## ========================================== + Coverage 74.53% 79.71% +5.18% ========================================== Files 413 418 +5 Lines 65509 71104 +5595 ========================================== + Hits 48824 56682 +7858 + Misses 16685 14422 -2263 ``` | [Flag](https://app.codecov.io/gh/opensearch-project/opensearch-rs/pull/234/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) | Coverage Δ | | |---|---|---| | [integration](https://app.codecov.io/gh/opensearch-project/opensearch-rs/pull/234/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project) | `79.71% <ø> (+5.18%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=opensearch-project#carryforward-flags-in-the-pull-request-comment) to find out more.

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[derek-ho]

https://github.com/opensearch-project/opensearch-rs/blob/main/.github/workflows/test.yml#L36 - if this becomes 2.12.0 or onwards, then this change is necessary. For now this is unnecessary. Should the tests be run with a matrix of different opensearch versions to ensure compatibility?

[Xtansia]

https://github.com/opensearch-project/opensearch-rs/blob/main/.github/workflows/test.yml#L36 - if this becomes 2.12.0 or onwards, then this change is necessary. For now this is unnecessary. Should the tests be run with a matrix of different opensearch versions to ensure compatibility?

The linked line is only used for a handful of very basic tests, the real integration tests where we use core's YAML tests is this matrix here: https://github.com/opensearch-project/opensearch-rs/blob/main/.github/workflows/test.yml#L66

[derek-ho]

Got it. @Xtansia this change is starting in 2.12.0 onwards. I am seeing in the matrix this wouldn't be tested. Can you suggest how you think I can change this PR to best pickup the changes from 2.12.0 onwards?

[derek-ho]

@Xtansia @dblock can you confirm what is the plan to add 2.12.0 when released into that matrix, so I can modify this PR to add support for the new admin credential changes? If there is no plan then I think we can close this PR and mark this repo as compliant with the new credential changes, thanks!

[dblock]

@derek-ho AFAIK when 2.12 is available we'll add it to CI. I think you can mark this as draft as other PRs?

[DarshitChanpura]

Now that 2.12 is released this should be unblocked. Would the maintainers review and merge this?

[Xtansia]

@derek-ho Could you please add 2.12.0 to the various workflow matrices so that we can confirm things are working as expected?

[derek-ho]

@Xtansia thanks for the suggestion. I used your logic to extract the version, but used the same logic as opensearch-build: https://github.com/opensearch-project/opensearch-build/blob/main/scripts/default/integtest.sh to determine whether it is >= 2.12, just to be consistent. It looks like tests are passing and PR is in a good state. Please merge when it looks good, thanks!

[Xtansia]

Thanks @derek-ho!