ZoneControl:Thermostat should move the extensible fields at the end

[jmarrec]

Issue overview

Here is the current IDD:

ZoneControl:Thermostat,
  A1 , \field Name
  A2 , \field Zone or ZoneList Name
  A3 , \field Control Type Schedule Name
  A4 , \field Control 1 Object Type
  A5 , \field Control 1 Name
  A6 , \field Control 2 Object Type
  A7 , \field Control 2 Name
  A8 , \field Control 3 Object Type
  A9 , \field Control 3 Name
  A10, \field Control 4 Object Type
  A11, \field Control 4 Name
  N1 ; \field Temperature Difference Between Cutout And Setpoint

Field N1 should be moved betwen A3 and A4, so we can treat the Control Object Type / Control Object Name as extensible fields (in openstudio in particular, see NREL/OpenStudio#3584 (comment))

Details

Some additional details for this issue (if relevant):

• Platform (Operating system, version)
• Version of EnergyPlus (if using an intermediate build, include SHA)
• Unmethours link or helpdesk ticket number

Checklist

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• Defect file added (list location of defect file here)
• Ticket added to Pivotal for defect (development team task)
• Pull request created (the pull request will have additional tasks related to reviewing changes that fix this defect)