etcd member failing to bootstrap and exits because of dial tcp timeout

[hasbro17]

The etcd member can occasionally fail to bootstrap (and exit), by failing to talk to another member due to a dail tcp timeout.

# Logs of etcd member test-etcd-m2pfm-0001
etcdserver: could not get cluster response from http://test-etcd-m2pfm-0000.test-etcd-m2pfm.e2e-etcd-operator-flake-164.svc.cluster.local:2380: Get http://test-etcd-m2pfm-0000.test-etcd-m2pfm.e2e-etcd-operator-flake-164.svc.cluster.local:2380/members:
dial tcp: i/o timeout

etcdmain: cannot fetch cluster info from peer urls: could not retrieve cluster information from the given urls

If this happens for the 2nd member added to the cluster, it can lose quorum and go into disaster recovery.

The exact cause for the dial tcp timeout is not known. Putting this issue as a reference in case we encounter the above problem more frequently.

[hasbro17]

Already tracking in #1300