Changing the action parameter setting method name in new client builders to "<parameter name>Param".

Changing the private rest.li 2.0 format determination method name in test client builder wrapper.

Refactoring code generation utility methods to be used by prod and test code.

Change the way the client builders' generator version is detected in test code.

Simplified the restli client builder detection in test code.

Added tests for builder wrapper builder version detection.

Fixed add<Name>Param method name creation.

Improve testing around builder wrapper.

Added CHANGELOG