fix master reference

Change-Id: I13193168c9cdc80117adee96e56768060806a61c
diff --git a/cloud-deploy-pipeline.groovy b/cloud-deploy-pipeline.groovy
index 24df808..cdfbb17 100644
--- a/cloud-deploy-pipeline.groovy
+++ b/cloud-deploy-pipeline.groovy
@@ -242,7 +242,7 @@
                 orchestrate.installCephOsd(saltMaster)
             }
 
-            if (salt.testTarget(master, 'I@ceph:radosgw')) {
+            if (salt.testTarget(saltMaster, 'I@ceph:radosgw')) {
                 orchestrate.installCephRadosgw(saltMaster)
             }
         }