Remove HOP Dependency (2.4.x)

[garyrussell]

Hop will no longer support JDK 8 before the end of life of 2.4.x; there is only one hard dependency on Hop (in LocalizedQueueConnectionFactory to determine the hosting node of a classic mirrored queue).

[acogoluegnes]

LocalizedQueueConnectionFactory uses only the /queues/{vhost}/{queue} endpoint. The easiest would be to use the RestTemplate and Jackson, to keep the same dependencies as Hop.