add helm install check and fix get VERSION function in install Kurator

Signed-off-by: LiZhenCheng9527 <lizhencheng6@huawei.com>

hack/e2e-test/install-kurator.sh

@@ -10,9 +10,17 @@ KUBECONFIG_PATH=${KUBECONFIG_PATH:-"${HOME}/.kube"}
 MAIN_KUBECONFIG=${MAIN_KUBECONFIG:-"${KUBECONFIG_PATH}/kurator-host.config"}
 export KUBECONFIG=${MAIN_KUBECONFIG}
 COMMIT_ID=$(git rev-parse --short HEAD)
-VERSION=$(echo "$COMMIT_ID" | grep -o '^[0-9]')
-
-sleep 5s
+VERSION=$(echo "$COMMIT_ID" | sed 's/[^0-9]//g')
+
+while true; do
+  if command -v helm >/dev/null 2>&1; then
+    echo "Helm is installed"
+    break
+  else
+    echo "Helm is not install, waiting..."
+  fi
+  sleep 5s
+done
 
 helm repo add jetstack https://charts.jetstack.io
 helm repo update