Adding comment to clarify use of default admin credentials

[joshpalis]

Description

Updates build.gradle with comments explaining use of default admin credentials and moves security integration test cluster set up from ext under testClusters.integTest

Issues Resolved

#310
Handling comment : #418 (comment)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f4a31d0) 71.88% compared to head (1394394) 71.88%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #435   +/-   ##
=========================================
  Coverage     71.88%   71.88%           
  Complexity      620      620           
=========================================
  Files            78       78           
  Lines          3126     3126           
  Branches        236      236           
=========================================
  Hits           2247     2247           
  Misses          772      772           
  Partials        107      107           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[dbwiddis]

LGTM! Thanks for making this less confusing!

[owaiskazi19]

@prudhvigodithi can you take a look of the change?

[DarshitChanpura]

ty @joshpalis !

[owaiskazi19]

Let's get this in. Any changes mentioned by @prudhvigodithi can be addressed in the follow up PR.

[prudhvigodithi]

Thanks @joshpalis, just one comment, the change was made from zipArchive to secureIntegTestPluginArchive and moved the security code from ext{} block to integTest block. I'm fine with the code moving to integTest block but curious on why zipArchive was just looking at maven local and failing without trying other declared repositories{}. Whereas secureIntegTestPluginArchive pulls the security zip from https://aws.oss.sonatype.org/content/repositories/snapshots. If we were able to debug this we can continue to use zipArchive without secureIntegTestPluginArchive.
Thank you
Adding @gaiksaya