ad-auth: add necessary packages for realmd

ad-auth/tasks/sssd.yml

@@ -9,6 +9,9 @@
     - libnss-sss
     - sssd-tools
     - realmd
+    - policykit-1 # this is required for realm to discover realms...
+    - adcli # this is required for realm to join realms...
+    - packagekit # this is required for realm to i don't know and don't even care anymore...
   notify:
     - clear sssd cache
   tags: