Add a option to set the rebuild frequency

Author: mscherer

README.md

@@ -46,7 +46,8 @@ push to openshift, with £NAME replaced by the name given to the role.
 # Regular rebuild
 
 The role will rebuild the website on a regular basis, every 6h 
-by default. This is not yet a option that can be changed.
+by default. This can be changed with the parameter `rebuild_interval`, which express
+the time between automated rebuild attempts if nothing changed, expressed in hours.
 
 # Debug the build
 

defaults/main.yml

@@ -4,3 +4,5 @@ builder_username: middleman_builder
 update_submodules: True
 watchers:  []
 irc_server: False
+# in hours
+rebuild_interval: 6

templates/builder.yml

@@ -17,5 +17,7 @@ notification:
     # unused for now
     email_commiter: False
 remote: {{ rsync_url }}
+{% if rebuild_interval is defined %}
 # in hours
-regular_rebuild_interval: 6
+regular_rebuild_interval: {{ rebuild_interval }}
+{% endif %}