Add unless condition to .config_created file creation

Otherwise it does change every time.

Change-Id: I2047b243a6c6c7bc34951f65851f14b539b1c85d
diff --git a/jenkins/master/user.sls b/jenkins/master/user.sls
index d8df637..96639c3 100644
--- a/jenkins/master/user.sls
+++ b/jenkins/master/user.sls
@@ -22,5 +22,6 @@
   file.touch:
   - require:
     - file: {{ master.home }}/users/{{ user_name }}/config.xml
+  - unless: test -e {{ master.home }}/users/{{ user_name }}/.config_created
 
 {%- endfor %}