Inputs to the standalone-gossip-[full-ha].xml examples use a TCPGOSSIP config that will persist differently

Minor thing I want to sort to make legacy feature-pack-driven builds as consistent as possible with galleon-driven ones....

The docs/examples/configs/standalone-gossip-[full-ha].xml examples configure a TCPGOSSIP protocol but without the required outbound-socket-bindings attribute. Compatibility code in the subsystem handles this by converting the address value to 'org.jgroups.protocols.TCPGOSSIP', which in turn has a different resource registration and Galleon feature spec. Upshot is when the resource is persisted the xml will read org.jgroups.protocols.TCPGOSSIP. To clarify this, rather than relying on magic compatibility code the inputs for generating the configs should explicitly use 'org.jgroups.protocols.TCPGOSSIP'.