CLOUD-341 update to Ambari 1.7.0
CLOUD-341 update ambari rest client to 1.7.18
CLOUD-306 separate directory for the datanodes and nodemanager
CLOUD-362 service component restart organization
CLOUD-306 GCP default image removed
CLOUD-363 blueprint converter tests modified to handle 1.7 blueprints
CLOUD-306 update default blueprints
CLOUD-306 added new region
Merge pull request #392 from sequenceiq/ambari17

Integration with Ambari 1.7