Add the ability to set the X509 proxies strength
Edgar made changes to GWMS proxy scripts to allow them to specify the proxy encryption strength.
For RHEL8 the condor daemons need to talk to each other using proxies of 2048 bits otherwise they complain. I am leaving the default as 1024 strength as it is today and I will be testing in some frontends over the weekend what happens if the default is moved to 2048.
The changes were merged in the master branch.