Hot-fix: fixed the typo for the offline setup

Related-PROD: PROD-37187
Change-Id: Ib34c81d3dfbf727aab5576c7cb69bb94c8544a4c
diff --git a/k8s/workspace/init-workspace.sh b/k8s/workspace/init-workspace.sh
index 4f8f00c..ab1d165 100644
--- a/k8s/workspace/init-workspace.sh
+++ b/k8s/workspace/init-workspace.sh
@@ -108,8 +108,8 @@
     keystone_pod=$(kubectl --kubeconfig $MY_PROJFOLDER/envs/mos-kubeconfig.yaml get pod -n openstack -o=custom-columns=NAME:.metadata.name | grep keystone-client)
     echo "# Extracting network: taking the first found external network"
     cmd="openstack network list --external -c Name -f value | head -n1"
-    echo "# Running 'kubectl --kubeconfig $MY_PROJFOLDER/envs/mos-kubeconfig.yaml -n openstack exec ${keystone_pod} -c keystone-client --stdin -- "${cmd}"'"
-    vPUBNET=$(kubectl --kubeconfig $MY_PROJFOLDER/envs/mos-kubeconfig.yaml -n openstack exec ${keystone_pod} -c keystone-client --stdin -- ${cmd})
+    echo "# Running 'kubectl --kubeconfig $MY_PROJFOLDER/envs/mos-kubeconfig.yaml -n openstack exec ${keystone_pod} -c keystone-client --stdin -- sh -c '${cmd}'"
+    vPUBNET=$(kubectl --kubeconfig $MY_PROJFOLDER/envs/mos-kubeconfig.yaml -n openstack exec ${keystone_pod} -c keystone-client --stdin -- sh -c "${cmd}")
     echo "-> 'openstack network list --external -c Name -f value | head -n1': '${vPUBNET}'"
     ewriteln "export TEMPEST_CUSTOM_PUBLIC_NET=${vPUBNET}"