several fixes:

- removed actions feature as this should be global and not per module
- removed default fields from return docs
- moved tags docs to shared fragments
- removed unused imports

lib/ansible/modules/cloud/azure/azure_rm_subnet.py

@@ -115,7 +115,6 @@ from ansible.module_utils.azure_rm_common import *
 
 try:
     from msrestazure.azure_exceptions import CloudError
-    from azure.common import AzureMissingResourceHttpError
     from azure.mgmt.network.models import Subnet, NetworkSecurityGroup
 except ImportError:
     # This is handled in azure_rm_common