In order to keep an SSO session from one cluster and that of another separate. KnoxSSO should support multiple cookie names.
This will require:
1. configurable name in KnoxSSO->websso and webssout with default of hadoop-jwt
2. participating applications to have it configurable as well
Note that cookies from other clusters will still be presented to each other if they are in the same domain and over ssl. This will just allow the participating application to find the cookie intended for its respective cluster SSO session.