[Draft] Testing admin password changes

[joshpalis]

Description

PR in Draft, testing changes

Replacing default admin password with an opensearch initial admin password

Issues Resolved

#310

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c6e6ed2) 71.83% compared to head (f79bd04) 71.83%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #415   +/-   ##
=========================================
  Coverage     71.83%   71.83%           
  Complexity      613      613           
=========================================
  Files            79       79           
  Lines          3082     3082           
  Branches        237      237           
=========================================
  Hits           2214     2214           
  Misses          763      763           
  Partials        105      105           

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[DarshitChanpura]

this setter should be version based. In case the version being pulled is < 2.12 the password is admin else it should be read from env variable. But in case if security plugin's demo configuration is not being used at all, this logic is not needed at all.

[joshpalis]

The security plugin's demo configuration isn't directly used, we pull the configuration files from the security plugin and manually set the required cluster settings while setting up a security enabled integration test cluster. Given this, I'll go ahead and close out this PR, as this modification is not necessary for our plugin.