[WFCORE-445] Add our own JAAS configuration to provide our preferred config for GSSAPI if no other settings found.
[WFCORE-448] Add ibm.jdk to the CLI dependencies.
Merge pull request #379 from darranl/WFCORE-445

[WFCORE-445] / [WFCORE-448] Default JAAS config + support config loading on IBM JDK.