Update main.yml cron intervals

Former-commit-id: ceee86c1

roles/provision_homedir/tasks/main.yml

@@ -19,5 +19,5 @@
 
 # the lockfile for makeing home directories should be located on the shared directory where the home directories will be created. Otherwise it will be racey
 - name: provision_homedir cron job 
-  cron: name=provision_homedir job="/usr/bin/flock -x -n {{ mnthome }}/home/provision.lck -c {{ provision_homedir }}" user=root minute=*/17 state=present
+  cron: name=provision_homedir job="/usr/bin/flock -x -n {{ mnthome }}/home/provision.lck -c {{ provision_homedir }}" user=root minute=*/15 state=present
   sudo: true