Use required=True and choices=[].

lib/ansible/modules/extras/cloud/rackspace/rax_mon_alarm.py

@@ -198,11 +198,11 @@ def main():
     argument_spec = rax_argument_spec()
     argument_spec.update(
         dict(
-            state=dict(default='present'),
-            label=dict(),
-            entity_id=dict(),
-            check_id=dict(),
-            notification_plan_id=dict(),
+            state=dict(default='present', choices=['present', 'absent']),
+            label=dict(required=True),
+            entity_id=dict(required=True),
+            check_id=dict(required=True),
+            notification_plan_id=dict(required=True),
             criteria=dict(),
             disabled=dict(type='bool', default=False),
             metadata=dict(type='dict')

lib/ansible/modules/extras/cloud/rackspace/rax_mon_check.py

@@ -271,9 +271,9 @@ def main():
     argument_spec = rax_argument_spec()
     argument_spec.update(
         dict(
-            entity_id=dict(),
-            label=dict(),
-            check_type=dict(),
+            entity_id=dict(required=True),
+            label=dict(required=True),
+            check_type=dict(required=True),
             monitoring_zones_poll=dict(),
             target_hostname=dict(),
             target_alias=dict(),
@@ -282,7 +282,7 @@ def main():
             metadata=dict(type='dict', default={}),
             period=dict(type='int'),
             timeout=dict(type='int'),
-            state=dict(default='present')
+            state=dict(default='present', choices=['present', 'absent'])
         )
     )
 

lib/ansible/modules/extras/cloud/rackspace/rax_mon_entity.py

@@ -161,8 +161,8 @@ def main():
     argument_spec = rax_argument_spec()
     argument_spec.update(
         dict(
-            state=dict(default='present'),
-            label=dict(),
+            state=dict(default='present', choices=['present', 'absent']),
+            label=dict(required=True),
             agent_id=dict(),
             named_ip_addresses=dict(type='dict', default={}),
             metadata=dict(type='dict', default={})

lib/ansible/modules/extras/cloud/rackspace/rax_mon_notification.py

@@ -154,10 +154,10 @@ def main():
     argument_spec = rax_argument_spec()
     argument_spec.update(
         dict(
-            state=dict(default='present'),
-            label=dict(),
-            notification_type=dict(),
-            details=dict(type='dict', default={})
+            state=dict(default='present', choices=['present', 'absent']),
+            label=dict(required=True),
+            notification_type=dict(required=True, choices=['webhook', 'email', 'pagerduty']),
+            details=dict(required=True, type='dict')
         )
     )
 

lib/ansible/modules/extras/cloud/rackspace/rax_mon_notification_plan.py

@@ -151,8 +151,8 @@ def main():
     argument_spec = rax_argument_spec()
     argument_spec.update(
         dict(
-            state=dict(default='present'),
-            label=dict(),
+            state=dict(default='present', choices=['present', 'absent']),
+            label=dict(required=True),
             critical_state=dict(type='list'),
             warning_state=dict(type='list'),
             ok_state=dict(type='list')