Changes for the Performance Analyzer IT to run with newer versions of ES

[sidheart]

Fixes #, if available:

Description of changes:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #256 (24fa0ab) into master (4713ae2) will increase coverage by 28.52%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master     #256       +/-   ##
=============================================
+ Coverage     19.47%   48.00%   +28.52%     
- Complexity       80      195      +115     
=============================================
  Files            39       39               
  Lines          2008     2000        -8     
  Branches        150      150               
=============================================
+ Hits            391      960      +569     
+ Misses         1598      985      -613     
- Partials         19       55       +36     

Impacted Files	Coverage Δ	Complexity Δ
...analyzer/collectors/MasterServiceEventMetrics.java	9.01% <0.00%> (+9.01%)	2.00% <0.00%> (+2.00%)
...rformanceAnalyzerOverridesClusterConfigAction.java	11.68% <0.00%> (+11.68%)	2.00% <0.00%> (+2.00%)
...action/config/PerformanceAnalyzerConfigAction.java	17.18% <0.00%> (+17.18%)	3.00% <0.00%> (+3.00%)
...manceanalyzer/collectors/MasterServiceMetrics.java	19.23% <0.00%> (+19.23%)	2.00% <0.00%> (+2.00%)
...config/PerformanceAnalyzerClusterConfigAction.java	20.51% <0.00%> (+20.51%)	2.00% <0.00%> (+2.00%)
...nalyzer/config/setting/ClusterSettingsManager.java	21.55% <0.00%> (+20.68%)	7.00% <0.00%> (+6.00%)
...ormanceanalyzer/writer/EventLogQueueProcessor.java	25.00% <0.00%> (+25.00%)	3.00% <0.00%> (+3.00%)
...yzer/action/PerformanceAnalyzerActionListener.java	33.33% <0.00%> (+33.33%)	4.00% <0.00%> (+4.00%)
...ig/setting/PerformanceAnalyzerClusterSettings.java	88.88% <0.00%> (+33.33%)	1.00% <0.00%> (+1.00%)
...onfig/setting/handler/NodeStatsSettingHandler.java	41.66% <0.00%> (+41.66%)	1.00% <0.00%> (+1.00%)
... and 12 more

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