Copy amqp output plugin into rabbitmq file
Change AMQP to RabbitMQ names
Remove 'name' field
Remove amqp output plugin
Rename amqp input plugin to rabbitmq
Change amqp -> rabbitmq for variable and documentation
Remove 'name' variable for rabbitmq input

Depricated due to conflicts with puppet naming convention. Replaced
by 'queue' variable. See LOGSTASH-755
Rename amqp -> rabbitmq for input config variables
Minor rename amqp -> rabbitmq for agent doc
Minor rename amqp -> rabbitmq for file config doc
Change amqp input test to rabbitmq
Minor doc change for rabbitmq output plugin
Minor doc fix for gemfire input plugin
Update zenoss input plugin to use rabbitmq
Update elasticsearch-river output plugin to use rabbitmq
Update amqp tutorial to use rabbitmq
Update link to rabbitmq tutorial
Update minor reference to amqp to rabbitmq
Change amqp -> rabbitmq in lgtm conf
Update elasticsearch river conf example to use rabbitmq