Allow to provide policy state

It might be desired by deployer to remove already applied policy.
For that policy state should be explicitly passeda as absent
for the module.

Change-Id: I24bb110998eef978daf618964c1ee3713eb6b339

defaults/main.yml

@@ -261,6 +261,12 @@ rabbitmq_disable_non_tls_listeners: False
 #     pattern: '^(event|metering|notifications)\.'
 #     tags: "ha-sync-mode=automatic"
 #     priority: 0
+#     state:present
+# If policy needs to be removed, provide `state: absent`
+#   - name: "HA"
+#     pattern: '^(?!(amq\.)|(.*_fanout_)|(reply_)).*'
+#     tags: "ha-mode=all"
+#     state: absent
 #
 rabbitmq_policies: []
 rabbitmq_apply_openstack_policies: False

tasks/rabbitmq_post_install.yml

@@ -88,6 +88,7 @@
     name: "{{ item.name }}"
     pattern: "{{ item.pattern }}"
     priority: "{{ item.priority | default(0) }}"
+    state: "{{ item.state | default(omit) }}"
     tags: "{{ item.tags }}"
   register: rabbitmq_policy
   loop: "{{ (rabbitmq_apply_openstack_policies | bool) | ternary(rabbitmq_openstack_policies + rabbitmq_policies, rabbitmq_policies) }}"