Add timeout server configurations to action execution

[osandamaleesha]

Proposed changes in this pull request

This PR adds http client related server configurations to action execution and updates unit tests in ActionExecutorConfigTest, APIClientTest and ActionExecutorServiceImpl classes. wso2/product-is#21119

When should this PR be merged

Soon

Follow up actions

N/A

[malithie]

Let's add a configuration the the http connection pool as well
PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(); connectionManager.setMaxTotal(20);

[codecov]

Codecov Report

Attention: Patch coverage is 91.17647% with 3 lines in your changes missing coverage. Please review.

Project coverage is 21.11%. Comparing base (6b94bf9) to head (a8fffd8).
Report is 77 commits behind head on master.

Files with missing lines	Patch %	Lines
...ty/action/execution/util/ActionExecutorConfig.java	89.65%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #5935      +/-   ##
============================================
+ Coverage     21.07%   21.11%   +0.04%     
- Complexity     5626     5642      +16     
============================================
  Files          1561     1561              
  Lines         99202    99234      +32     
  Branches      15189    15185       -4     
============================================
+ Hits          20904    20953      +49     
+ Misses        75277    75257      -20     
- Partials       3021     3024       +3     

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