gate: move 'root check' to setup

Change-Id: I4d365390d673c45eb2bb1ff885ee1c74e632d5d8

tools/gate/setup_gate.sh

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 set -ex
+
+# Exit if run as root
+if [[ $EUID -eq 0 ]]; then
+   echo "This script cannot be run as root" 1>&2
+   exit 1
+fi
+
 export WORK_DIR=$(pwd)
 source ${WORK_DIR}/tools/gate/vars.sh
 source ${WORK_DIR}/tools/gate/funcs/common.sh

tools/kubeadm-aio/kubeadm-aio-launcher.sh

@@ -15,12 +15,6 @@
 #    under the License.
 set -xe
 
-# Exit if run as root
-if [[ $EUID -eq 0 ]]; then
-   echo "This script cannot be run as root" 1>&2
-   exit 1
-fi
-
 # Setup shared mounts for kubelet
 sudo mkdir -p /var/lib/kubelet
 sudo mount --bind /var/lib/kubelet /var/lib/kubelet