Fixing typo

Environment variable expansion had % instead of $

Change-Id: Ie84e93378fb654433b443afa26eeab6e210ad311
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
diff --git a/robot-systest/run_test.sh b/robot-systest/run_test.sh
index 6792452..038ea03 100755
--- a/robot-systest/run_test.sh
+++ b/robot-systest/run_test.sh
@@ -44,7 +44,7 @@
     while [ $attempts -ge 0 ] ; do
         echo -e "\n$( date '+%F_%H:%M:%S' ) Creating K8s Cluster"
 
-        osm k8scluster-add --creds ${K8S_CREDENTIALS} --version "v1" --vim ${VIM_TARGET} --k8s-nets "{\"net1\": \"%{VIM_MGMT_NET}\"}" ${VIM_TARGET} --description "Robot cluster"
+        osm k8scluster-add --creds ${K8S_CREDENTIALS} --version "v1" --vim ${VIM_TARGET} --k8s-nets "{\"net1\": \"${VIM_MGMT_NET}\"}" ${VIM_TARGET} --description "Robot cluster"
 
         STATUS=""
         i=0