Merge pull request #4062 from HejdaJakub/getAllNamespaces_policy-forObserver

fix(core): allow perun observer to call getAllNamespaces method

Author: HejdaJakub

perun-base/src/main/resources/perun-roles.yml

@@ -345,7 +345,8 @@ perun_policies:
       - default_policy
 
   getAllNamespaces_policy:
-    policy_roles: [ ]
+    policy_roles:
+      - PERUNOBSERVER:
     include_policies:
       - default_policy