[Backport 2.5] Adding index template permissions to kibana_server role

[opensearch-trigger-bot]

Backport fb70a75 from #2503

[codecov-commenter]

Codecov Report

Merging #2509 (bbffd1e) into 2.5 (06f767b) will increase coverage by 0.03%.
The diff coverage is n/a.

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@@             Coverage Diff              @@
##                2.5    #2509      +/-   ##
============================================
+ Coverage     61.06%   61.09%   +0.03%     
- Complexity     3252     3255       +3     
============================================
  Files           258      258              
  Lines         18137    18137              
  Branches       3232     3232              
============================================
+ Hits          11075    11081       +6     
+ Misses         5490     5486       -4     
+ Partials       1572     1570       -2     

Impacted Files	Coverage Δ
...a/org/opensearch/security/tools/SecurityAdmin.java	36.00% <0.00%> (+0.24%)	⬆️
...security/auditlog/sink/ExternalOpenSearchSink.java	61.72% <0.00%> (+2.46%)	⬆️
...ch/security/auditlog/routing/AsyncStoragePool.java	55.55% <0.00%> (+5.55%)	⬆️

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[cliu123]

merging the backport as the Spotless scan failures are not related to this change. I re-ran, but still failed.

* What went wrong:
Execution failed for task ':spotlessJavaCheck'.
> The following files had format violations:
      src/test/java/org/opensearch/security/auth/InternalAuthBackendTests.java
          @@ -22,7 +22,6 @@
           import·org.mockito.Mockito;
           
           import·org.opensearch.OpenSearchSecurityException;
          -
           import·org.opensearch.security.auth.internal.InternalAuthenticationBackend;
           import·org.opensearch.security.securityconf.InternalUsersModel;
           import·org.opensearch.security.user.AuthCredentials;