AMBARI-6906. Validation error and warning should be shown as hovers
AMBARI-6853 - Alerts: Calculate Hash Based On Alert Definitions (jonathanhurley)
AMBARI-6860 - Alerts: Add Ability to Invalidate Definition Hash For An Agent (jonathanhurley)
AMBARI-6880 - Alerts: Send Definitions Down Via Commands to the Agent (jonathanhurley)