Changes that allow event processor to be extended

[aravindanr]

1. Bindings for Event related classes, like EventProvider, EventQueueProvider and ActionProcessor are moved to a different module.

2. Methods in SimpleEventProcessor are protected to allow for extension by inheritance.

[codecov]

Codecov Report

Merging #1891 into master will decrease coverage by 0.00%.
The diff coverage is 87.50%.

@@             Coverage Diff              @@
##             master    #1891      +/-   ##
============================================
- Coverage     65.11%   65.11%   -0.01%     
- Complexity     3891     3892       +1     
============================================
  Files           299      300       +1     
  Lines         18451    18455       +4     
  Branches       1684     1684              
============================================
+ Hits          12015    12017       +2     
- Misses         5606     5607       +1     
- Partials        830      831       +1     

Impacted Files	Coverage Δ	Complexity Δ
.../com/netflix/conductor/core/config/CoreModule.java	100.00% <ø> (ø)	22.00 <0.00> (-1.00)
...ix/conductor/core/events/SimpleEventProcessor.java	68.88% <0.00%> (-0.52%)	26.00 <0.00> (ø)
...com/netflix/conductor/core/config/EventModule.java	100.00% <100.00%> (ø)	3.00 <3.00> (?)
...ava/com/netflix/conductor/server/ServerModule.java	100.00% <100.00%> (ø)	2.00 <0.00> (ø)
...x/conductor/common/metadata/tasks/TaskExecLog.java	80.95% <0.00%> (-4.77%)	11.00% <0.00%> (-1.00%)

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[coveralls]

Pull Request Test Coverage Report for Build 4588

• 7 of 8 (87.5%) changed or added relevant lines in 3 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.08%) to 69.64%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
core/src/main/java/com/netflix/conductor/core/events/SimpleEventProcessor.java	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
cassandra-persistence/src/main/java/com/netflix/conductor/dao/cassandra/CassandraMetadataDAO.java	2	59.59%

Totals
Change from base Build 4559:	0.08%
Covered Lines:	12852
Relevant Lines:	18455

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💛 - Coveralls