JGroups: Upgrade to 2.10 (check sys proper preferIpX)

[kimchy]

When upgrading to 2.10, check if we can remove the system property of preferIpv4. Consider simulating the logic for choosing first non loopback ip in es (for transport, http, and jgroups bind_addr)

[kimchy]

not going to be added since the jgroups plugin was removed.