Add rabbitmq-client in opennaas.
Merge branch 'develop' of https://github.com/dana-i2cat/opennaas into feature/rabbit-mq
SLAManager observation pusher client.

Allows pushing observations to SLAManager using rabbitMQ.

RabbitMQ info:
- API JavaDoc: http://www.rabbitmq.com/releases/rabbitmq-java-client/v3.2.4/rabbitmq-java-client-javadoc-3.2.4/
- API guide: http://www.rabbitmq.com/api-guide.html

WARNING: Untested. There is no server to test with.
ControllerInformation capability skeleton.
ControllerInformation capability implementatioController
Floodlight controller information actionset skeleton.
Floodlight ControllerInformation client with custom provider.
Actionset implementation for Floodlight ControllerInformation driver.
Fix healthState capability model and method.
Rename ofswitch monitoring capability to portstatistics.
Merge pull request #940 from adrian-rosello/refactor/rename-switch-monitoringcapab

Rename ofswitch monitoring capability to portstatistics.
Use new name in log.
Apply renaming into Activator.
Network Port Statistics skeleton.
Merge pull request #945 from logoff/release-0.29

Next development iteration 0.30-SNAPSHOT
Merge remote-tracking branch 'adrian-rosello/refactor/rename-switch-monitoringcapab' into feature/net-statistics
Update netconf-server version and fix poms
Merge pull request #946 from adrian-rosello/develop

Update netconf-server version and fix poms
Merge branch 'develop' of https://github.com/dana-i2cat/opennaas into refactor/rename-monitoring-capab
Merge branch 'ofertie/monitoring' of https://github.com/dana-i2cat/opennaas into refactor/rename-monitoring-capab