Allow condor_store_cred to specify OAuth cred handle and include in file name written by the CredD
There's no flag you can pass to condor_store_cred to specify the OAuth credential handle. You can pass it in the wire protocol. But then on the server side it is still ignored. It just needs to be run through the filename sanitization function and included in the file written by the CredD.
This ticket adds a -H flag to specify handle.
CODE_REVIEW code looks good, documentation needed