Allow back two template muon paths in GRun (with PS=0), as for CMSHLT-125

Nothing really new: the two paths HLT_IsoMu24_IterTrk02_v1 and HLT_IsoTkMu24_IterTrk02_v1 were already in the GRun menu up to CMSSW_7_2_0_pre8, then removed in one of the latest pull requests. Now TSG would like to have them back in GRun, with PS=0, for monitoring and validation purposes.

This PR must NOT be forward ported to 73X, as a specific one with all latest development of the HLT menu is being prepared for it