[trivial] Resync charm-helpers

hooks/charmhelpers/contrib/openstack/context.py

@@ -21,11 +21,15 @@ from charmhelpers.core.hookenv import (
     relation_set,
     unit_get,
     unit_private_ip,
+    charm_name,
     DEBUG,
     INFO,
     WARNING,
     ERROR,
 )
+
+from charmhelpers.core.sysctl import create as sysctl_create
+
 from charmhelpers.core.host import (
     mkdir,
     write_file,
@@ -1015,3 +1019,14 @@ class NotificationDriverContext(OSContextGenerator):
             ctxt['notifications'] = "True"
 
         return ctxt
+
+
+class SysctlContext(OSContextGenerator):
+    """This context check if the 'sysctl' option exists on configuration
+    then creates a file with the loaded contents"""
+    def __call__(self):
+        sysctl_dict = config('sysctl')
+        if sysctl_dict:
+            sysctl_create(sysctl_dict,
+                          '/etc/sysctl.d/50-{0}.conf'.format(charm_name()))
+        return {'sysctl': sysctl_dict}

hooks/charmhelpers/core/templating.py

@@ -48,5 +48,5 @@ def render(source, target, context, owner='root', group='root',
                     level=hookenv.ERROR)
         raise e
     content = template.render(context)
-    host.mkdir(os.path.dirname(target))
+    host.mkdir(os.path.dirname(target), owner, group)
     host.write_file(target, content, owner, group, perms)