fixed GetFindings not searching all indices; fixed proper deletion of…

[petardz]

… old history indices

Signed-off-by: Petar Dzepina petar.dzepina@gmail.com

Description

[Describe what this change achieves]

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff

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[codecov-commenter]

Codecov Report

Merging #122 (a044fd4) into main (ee7f6fb) will decrease coverage by 0.88%.
The diff coverage is 22.22%.

@@             Coverage Diff              @@
##               main     #122      +/-   ##
============================================
- Coverage     40.16%   39.28%   -0.89%     
- Complexity      884      890       +6     
============================================
  Files           175      176       +1     
  Lines          6433     6684     +251     
  Branches        785      811      +26     
============================================
+ Hits           2584     2626      +42     
- Misses         3612     3816     +204     
- Partials        237      242       +5     

Impacted Files	Coverage Δ
...indexmanagment/DetectorIndexManagementService.java	0.00% <0.00%> (ø)
...alytics/config/monitors/DetectorMonitorConfig.java	53.84% <35.29%> (-1.71%)	⬇️
...search/securityanalytics/alerts/AlertsService.java	21.90% <50.00%> (ø)
...ch/securityanalytics/findings/FindingsService.java	39.70% <50.00%> (ø)
...ecurityanalytics/rules/backend/OSQueryBackend.java	66.37% <0.00%> (-8.91%)	⬇️
...g/opensearch/securityanalytics/model/Detector.java	70.24% <0.00%> (-0.63%)	⬇️
...a/org/opensearch/securityanalytics/model/Rule.java	0.00% <0.00%> (ø)
.../securityanalytics/rules/backend/QueryBackend.java	65.48% <0.00%> (ø)
...yanalytics/transport/TransportIndexRuleAction.java	0.00% <0.00%> (ø)
...lytics/transport/TransportIndexDetectorAction.java	0.00% <0.00%> (ø)
... and 2 more

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