Adding AK4PF JEC to Run2 MC and data GTs.

New set of GTs with the following additions:
* Run2 design GT:
 * adding AK4PF and AK4PFchs JEC
* Run2 MC GTs (both 50 and 25 ns):
 * adding AK4PF and AK4PFchs JEC
* Run1 data GT:
 * adding AK4PF and AK4PFchs JEC
* Run2 data GT:
 * adding AK4PF and AK4PFchs JEC