CLOUD-101 azure credentials in db
CLOUD-101 fixed migration
CLOUD-101 fixed tests
CLOUD-295 cluster status persisted as string
Merge pull request #358 from sequenceiq/cluster-status

LGTM
Merge pull request #350 from sequenceiq/azure-cer

Azure cer
CLOUD-282 add stack id and name to CloudbreakEventJson
Merge pull request #360 from sequenceiq/events-json

CLOUD-282 add stack id and name to CloudbreakEventJson
CLOUD-400 subscribe endpoint for clients
CLOUD-267 check if the requested subscription already exist
CLOUD-267 dummy notification sending mechanism
CLOUD-267 create notification for start/stop and set ambari ip as AVAILABLE event message
CLOUD-267 create notification from cloudbreakevents
CLOUD-267 create cluster creation failed event
CLOUD-282 add CloudbreakEvent new fields to Notification
CLOUD-267 validate url field in SubscribeRequest
CLOUD-273 uptime is counted from last start time
CLOUD-267 update log of event creation
CLOUD-267 add proper cause to stack status updates
CLOUD-267 delete unused websocket service