ansible: Allocate xsemen to pontos04

ansible/roles/pds_mount/defaults/main.yml

@@ -51,6 +51,7 @@ mount:
         - 'xondika'
         - 'xkonicar'
         - 'xkucerak'
+        - 'xsemen'
     antea: [] # those missing here will have primary on pontos
 #        - 'xbaranov'
 #        - 'xmatous3'