Script: EpPy-ZoneHVAC.py, Intent; Create a script that can rename all fields
related to the zone zerved by the HVAC system to a new Zone Name
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*EpPy-ZoneHVAC.py
-Added an if statement to test for the Zone HVAC Type passed into the function...
-Moved the test for valid Zone HVAC type just before processing the group set...
-Changed the result of the proto-function to return the full group dictionary...

-> Tested EpPy-ZoneHVAC.py fuction by calling from the command line