[FIXED JENKINS-16715] Make sure all ParametersActions are combined corre...

...ctly

Made sure that all ParametersActions are combined together,
Forced a set order Parameter overriding:
Default values from triggered project
Overridded by Parameters in current Build (if enabled)
Overridded by Parameters added configs.

Added test cases for most/all of the combinations above.
https://issues.jenkins-ci.org/browse/JENKINS-16715