Fix typo in Docker labels for calico/ctl and calico/node.

Change-Id: I7201ff5983810080b0f213fdafeb46c60f7d5355
diff --git a/src/com/mirantis/mcp/Calico.groovy b/src/com/mirantis/mcp/Calico.groovy
index 15060ec..fe4b15d 100644
--- a/src/com/mirantis/mcp/Calico.groovy
+++ b/src/com/mirantis/mcp/Calico.groovy
@@ -607,7 +607,7 @@
 
     // Add LABELs to dockerfile
     docker.setDockerfileLabels("./calicoctl/Dockerfile.calicoctl",
-                               ["docker.imgTag=${imgTag}",
+                               ["docker.imgTag=${ctlImgTag}",
                                 "calico.buildImage=${buildImage}",
                                 "calico.birdclUrl=${birdclUrl}"])
 
@@ -631,7 +631,7 @@
 
     // Add LABELs to dockerfile
     docker.setDockerfileLabels("./calico_node/Dockerfile",
-                               ["docker.imgTag=${imgTag}",
+                               ["docker.imgTag=${nodeImgTag}",
                                 "calico.buildImage=${buildImage}",
                                 "calico.felixImage=${felixImage}",
                                 "calico.confdUrl=${confdUrl}",