Add support for action configs

[vigyasharma]

Fixes #: #403 #404 #405

Description: This change allows action level configurations to be provided via config file - rca.conf.

Additional code refactoring includes:

• Config objects to encapsulate the an entire configuration. These allow config key, value, default value and validation functions to be stored in a single object.
• Support for validating config values via predicate functions.
• NestedConfig to recursively nest through a map and support multi-level nested configurations. Current support only allowed for three nested levels.
• Remove cache bound configurations from DeciderConfig
• Allow skipping muted configurations from rca.conf
• Changes in RcaConf to allow passing config jsons as strings for tests.
• Ignore flaky test TimeExpiringSetTest.testExpiringIteration

Tests: Added unit tests for all components

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 #402 into master will increase coverage by 0.48%.
The diff coverage is 97.46%.

@@             Coverage Diff              @@
##             master     #402      +/-   ##
============================================
+ Coverage     70.09%   70.58%   +0.48%     
- Complexity     2287     2311      +24     
============================================
  Files           303      307       +4     
  Lines         13605    13686      +81     
  Branches       1133     1142       +9     
============================================
+ Hits           9537     9660     +123     
+ Misses         3695     3663      -32     
+ Partials        373      363      -10     

Impacted Files	Coverage Δ	Complexity Δ
...yzer/decisionmaker/actions/SuppressibleAction.java	100.00% <ø> (ø)	5.00 <0.00> (ø)
...performanceanalyzer/rca/configs/DeciderConfig.java	47.05% <ø> (+0.39%)	4.00 <0.00> (-4.00)	⬆️
...ormanceanalyzer/rca/store/rca/cache/CacheUtil.java	58.62% <ø> (ø)	9.00 <0.00> (ø)
...erformanceanalyzer/rca/framework/core/RcaConf.java	52.21% <75.00%> (+1.30%)	33.00 <2.00> (+2.00)
...ecisionmaker/actions/ModifyCacheMaxSizeAction.java	88.88% <92.59%> (+10.68%)	17.00 <2.00> (+2.00)
...cisionmaker/actions/configs/QueueActionConfig.java	97.22% <97.22%> (ø)	5.00 <5.00> (?)
...cisionmaker/actions/ModifyQueueCapacityAction.java	80.95% <100.00%> (+11.21%)	14.00 <1.00> (-1.00)	⬆️
...cisionmaker/actions/configs/CacheActionConfig.java	100.00% <100.00%> (ø)	5.00 <5.00> (?)
...zer/decisionmaker/deciders/CacheHealthDecider.java	94.54% <100.00%> (+4.38%)	17.00 <0.00> (-2.00)	⬆️
...rmanceanalyzer/decisionmaker/deciders/Decider.java	65.51% <100.00%> (+6.89%)	5.00 <1.00> (-2.00)	⬆️
... and 15 more

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[ktkrg]

🚢 it!