fix an error in the default provisining script for home directories

roles/provision_homedir/vars/main.yml

 ---
 use_active_directory: False
 provision_homedir: /usr/local/sbin/provision_homedir.py
-homeDirEntry: "{% if use_active_directory %}unixHomeDirectory{% else %}homeDirectory {% endif %}"
-search_filter: "{% if use_active_directory %}(unixHomeDirectory=*){% else %} (objectClass=posixAccount) {% endif %}"
+homeDirEntry: "{% if use_active_directory %}unixHomeDirectory{% else %}homeDirectory{% endif %}"
+search_filter: "{% if use_active_directory %}(unixHomeDirectory=*){% else %}(objectClass=posixAccount){% endif %}"