Fix for common usage

Change-Id: Ifc844ecb3633d196e1705cb4e358411d2beb786b
diff --git a/ceph/osd/custom.sls b/ceph/osd/custom.sls
index abdd6b9..a004663 100644
--- a/ceph/osd/custom.sls
+++ b/ceph/osd/custom.sls
@@ -1,4 +1,4 @@
-{%- from "ceph/map.jinja" import osd with context %}
+{%- from "ceph/map.jinja" import common, osd with context %}
 
 {% set ceph_version = pillar.ceph.common.version %}