Adds resource_filters.json distribution

Cinder supposes to see resource_filters.json in
/etc/cinder/resource_filters.json, but role doesn't distribute this file
It implements generalized filters, w/o which non-admins will
experience problems with some operations (i.e in horizon).

Closes-Bug: #1810537
Change-Id: I0f699c9869effc5ccc0d3f79422935975f698134
(cherry picked from commit 5e7e1a7)

defaults/main.yml

@@ -371,6 +371,7 @@ cinder_rootwrap_conf_overrides: {}
 cinder_api_paste_ini_overrides: {}
 cinder_cinder_conf_overrides: {}
 cinder_api_uwsgi_ini_overrides: {}
+cinder_resource_filters_overrides: {}
 
 ## Set default cinder path in service units. The default override sets the
 ## execution path for the cinder service.

tasks/cinder_post_install.yml

@@ -31,6 +31,10 @@
       dest: "/etc/cinder/api-paste.ini"
       config_overrides: "{{ cinder_api_paste_ini_overrides }}"
       config_type: "ini"
+    - src: "resource_filters.json.j2"
+      dest: "/etc/cinder/resource_filters.json"
+      config_overrides: "{{ cinder_resource_filters_overrides }}"
+      config_type: "json"
     - src: "rootwrap.conf.j2"
       dest: "/etc/cinder/rootwrap.conf"
       config_overrides: "{{ cinder_rootwrap_conf_overrides }}"

templates/resource_filters.json.j2

@@ -0,0 +1,15 @@
+{
+    "volume": ["name", "status", "metadata",
+               "bootable", "migration_status", "availability_zone",
+               "group_id"],
+    "backup": ["name", "status", "volume_id"],
+    "snapshot": ["name", "status", "volume_id", "metadata",
+                 "availability_zone"],
+    "group": [],
+    "group_snapshot": ["status", "group_id"],
+    "attachment": ["volume_id", "status", "instance_id", "attach_status"],
+    "message": ["resource_uuid", "resource_type", "event_id",
+                "request_id", "message_level"],
+    "pool": ["name", "volume_type"],
+    "volume_type": []
+}