Feature/add grooming parameters for fastjet

this is a backport to 71X for git PR 4705. It adds needed grooming parameters to an hlt cfi.py file and modifies the fastjetjetproducer module to read in values of the parameters as opposed to just checking for their existence.
Likewise here: double instead of dobule.

@ktf
Why are those errors in cfi not caught and flagged by scram?