Fix bash typo in helm base

helpers/helm_base.yaml

@@ -11,7 +11,7 @@
     # has the project "Viewer" role. If it still produces a warning then try
     # enabling this Cloud Resource Manager API. See admin/GCP_README.md
     # for more information.
-    - if [[ $CI_COMMIT_TAG !~ /^gcp-r[0-9]+_[0-9]+/ ]]; then
+    - if [[ $CI_COMMIT_TAG !~ ^gcp-r[0-9]+_[0-9]+ ]]; then
         export KUBECONFIG="/root/.kube/config";
         gcloud --verbosity=debug auth activate-service-account "${GEOSPHERE_DEPLOY_GCP_SA_EMAIL}" --key-file="${GEOSPHERE_DEPLOY_GCP_SA_KEY}";
         gcloud --verbosity=debug config set project "${GEOSPHERE_DEPLOY_GCP_PROJECT_NAME}";