fix match on cluster

Change-Id: I55e81dc2412acfb449a9ed8d752dcd9ed5619a78
diff --git a/ceph/setup/init.sls b/ceph/setup/init.sls
index e9c3e9a..4004937 100644
--- a/ceph/setup/init.sls
+++ b/ceph/setup/init.sls
@@ -3,7 +3,7 @@
 
 include:
 - ceph.common
-{%- if setup.get('crush').enabled %}
+{%- if setup.get('crush', {}).enabled %}
 - ceph.setup.crush
 {%- endif %}
 {%- if setup.get('pool') %}