[WFCORE-367] : Move ClientConfigurationImpl factory methods into ModelControllerClientConfiguration.

Adding a Factory class inside ModelControllerClientConfiguration to create new instances.
[WFCORE-225] Use the domain properties instead of the server properties
Merge pull request #386 from jamezp/WFCORE-225

[WFCORE-225] Use the domain properties instead of the server properties
Merge pull request #385 from ehsavoie/WFCORE-367

[WFCORE-367] : Move ClientConfigurationImpl factory methods into ModelControllerClientConfiguration.