Merge pull request #6149 from raywainman/vpa-release-1.0

Fix duplicate -addext when generating certificates with admission-controller/gencerts.sh

vertical-pod-autoscaler/pkg/admission-controller/gencerts.sh

@@ -51,7 +51,7 @@ set -o errexit
 # Create a server certificate
 openssl genrsa -out ${TMP_DIR}/serverKey.pem 2048
 # Note the CN is the DNS name of the service of the webhook.
-openssl req -new -key ${TMP_DIR}/serverKey.pem -out ${TMP_DIR}/server.csr -subj "/CN=vpa-webhook.kube-system.svc" -config ${TMP_DIR}/server.conf -addext "subjectAltName = DNS:vpa-webhook.kube-system.svc"
+openssl req -new -key ${TMP_DIR}/serverKey.pem -out ${TMP_DIR}/server.csr -subj "/CN=vpa-webhook.kube-system.svc" -config ${TMP_DIR}/server.conf
 openssl x509 -req -in ${TMP_DIR}/server.csr -CA ${TMP_DIR}/caCert.pem -CAkey ${TMP_DIR}/caKey.pem -CAcreateserial -out ${TMP_DIR}/serverCert.pem -days 100000 -extensions SAN -extensions v3_req -extfile ${TMP_DIR}/server.conf
 
 echo "Uploading certs to the cluster."