Merge pull request #37451 from jszczepkowski/ha-read-quorum

Automatic merge from submit-queue

Added setting etcd read quorum flag

cluster/common.sh

@@ -762,6 +762,11 @@ EOF
     if [ -n "${INITIAL_ETCD_CLUSTER:-}" ]; then
       cat >>$file <<EOF
 INITIAL_ETCD_CLUSTER: $(yaml-quote ${INITIAL_ETCD_CLUSTER})
+EOF
+    fi
+    if [ -n "${ETCD_QUORUM_READ:-}" ]; then
+      cat >>$file <<EOF
+ETCD_QUORUM_READ: $(yaml-quote ${ETCD_QUORUM_READ})
 EOF
     fi