Add ability to configure the connection request timeout for Elasticsearch rest client

[mdepak]

By default, the connection request timeout is interpreted from the system default. Under high throughput scenarios, elasticsearch client timeout when getting the connection from the HTTP rest-client library.

[codecov]

Codecov Report

Merging #1847 into dev will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                dev    #1847      +/-   ##
============================================
+ Coverage     64.87%   64.90%   +0.02%     
- Complexity     3841     3867      +26     
============================================
  Files           295      298       +3     
  Lines         18206    18383     +177     
  Branches       1658     1674      +16     
============================================
+ Hits          11812    11932     +120     
- Misses         5576     5623      +47     
- Partials        818      828      +10     

Impacted Files	Coverage Δ	Complexity Δ
...ductor/dao/cassandra/CassandraEventHandlerDAO.java	65.78% <0.00%> (-10.53%)	15.00% <0.00%> (ø%)
...ix/conductor/dao/postgres/PostgresMetadataDAO.java	77.00% <0.00%> (-4.67%)	66.00% <0.00%> (ø%)
.../conductor/dao/cassandra/CassandraMetadataDAO.java	53.88% <0.00%> (-4.15%)	24.00% <0.00%> (ø%)
...tflix/conductor/dao/postgres/PostgresQueueDAO.java	87.60% <0.00%> (-3.31%)	51.00% <0.00%> (-1.00%)
...tor/core/config/SystemPropertiesConfiguration.java	62.50% <0.00%> (-1.00%)	25.00% <0.00%> (ø%)
...ductor/validations/WorkflowTaskTypeConstraint.java	89.40% <0.00%> (-0.31%)	0.00% <0.00%> (ø%)
...onductor/common/metadata/workflow/WorkflowDef.java	87.15% <0.00%> (-0.23%)	47.00% <0.00%> (+2.00%)	⬇️
...om/netflix/conductor/grpc/AbstractProtoMapper.java	41.85% <0.00%> (-0.18%)	71.00% <0.00%> (ø%)
.../com/netflix/conductor/core/config/CoreModule.java	100.00% <0.00%> (ø)	23.00% <0.00%> (+2.00%)
...m/netflix/conductor/core/config/Configuration.java	70.27% <0.00%> (ø)	21.00% <0.00%> (ø%)
... and 13 more

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[coveralls]

Pull Request Test Coverage Report for Build 4497

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 229 unchanged lines in 15 files lost coverage.
• Overall coverage decreased (-0.06%) to 69.445%

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Files with Coverage Reduction	New Missed Lines	%
common/src/main/java/com/netflix/conductor/common/metadata/tasks/Task.java	1	99.59%
common/src/main/java/com/netflix/conductor/common/metadata/workflow/WorkflowDef.java	2	98.17%
core/src/main/java/com/netflix/conductor/core/execution/tasks/SystemTaskExecutor.java	4	93.1%
core/src/main/java/com/netflix/conductor/core/execution/tasks/SystemTaskWorkerCoordinator.java	4	87.5%
postgres-persistence/src/main/java/com/netflix/conductor/dao/postgres/PostgresQueueDAO.java	4	92.56%
core/src/main/java/com/netflix/conductor/core/execution/DeciderService.java	5	92.72%
core/src/main/java/com/netflix/conductor/core/execution/ParametersUtils.java	7	93.24%
cassandra-persistence/src/main/java/com/netflix/conductor/dao/cassandra/CassandraEventHandlerDAO.java	8	68.42%
cassandra-persistence/src/main/java/com/netflix/conductor/dao/cassandra/CassandraMetadataDAO.java	8	55.44%
core/src/main/java/com/netflix/conductor/core/config/SystemPropertiesConfiguration.java	10	65.63%

Totals
Change from base Build 4475:	-0.06%
Covered Lines:	12766
Relevant Lines:	18383

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💛 - Coveralls

[kishorebanala]

@mdepak +1. Can you also add this to es6-persistence module to keep both the modules consistent please?

[mdepak]

@kishorebanala Added the config to es6-persistence module as well.