WIP: implemented AMQPLogSource (not tested yet)
WIP: implemented AMQPLogSource (not tested yet)

Former-commit-id: 50874bed1bab6a22b37c599b14a3d1a0cd077257 [formerly 043746be72ffff4672c3f94ded47fa010d2b496a]
Former-commit-id: a1788200d616f43111206d70f30e53ce854145b7
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine