SAK-32627 Upgrade jGroups to latest 3.x (#4523)
SAK-32627 Upgrade jGroups to latest 3.x (#4523)

This is includes lots of jGroups fixes but doesn’t have a change of API.
Also remove the additional maven repository as it’s in central now.
OpenCollabZA/sakai,OpenCollabZA/sakai,OpenCollabZA/sakai,OpenCollabZA/sakai,OpenCollabZA/sakai,OpenCollabZA/sakai,OpenCollabZA/sakai,OpenCollabZA/sakai