Add required attribute for azureevents in resource defaults

Author: devanshjainms

src/roles/ha_db_hana/tasks/files/constants.yaml

@@ -453,6 +453,7 @@ RESOURCE_DEFAULTS:
             required:               false
 
     azureevents:
+      required:                     true
       meta_attributes:
         allow-unhealthy-nodes:
           value:                    "true"
@@ -741,6 +742,7 @@ RESOURCE_DEFAULTS:
             required:               false
 
     azureevents:
+      required:                     true
       meta_attributes:
         allow-unhealthy-nodes:
           value:                    "true"