CLOUD-356 handle connection exceptions & resp code updates
CLOUD-356 handle connection exceptions & resp code updates

sequenceiq/cloudbreak,hortonworks/cloudbreak,hortonworks/cloudbreak,hortonworks/cloudbreak,hortonworks/cloudbreak,sequenceiq/cloudbreak,sequenceiq/cloudbreak,sequenceiq/cloudbreak,hortonworks/cloudbreak,hortonworks/cloudbreak,sequenceiq/cloudbreak