e2e flake: etcd pod failed on bootstrap

[hongchaodeng]

link: https://jenkins-etcd.prod.coreos.systems/job/etcd-operator-master/558/console

Operator added member "test-etcd-jf0xc-0001". But then later, the pod is gone.

From logs of pod "test-etcd-jf0xc-0001":

etcdserver: could not get cluster response from http://test-etcd-jf0xc-0000.test-etcd-jf0xc.e2e-etcd-operator-master-558.svc.cluster.local:2380: Get http://test-etcd-jf0xc-0000.test-etcd-jf0xc.e2e-etcd-operator-master-558.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

[hongchaodeng]

This timeout happens only 1s after bootstrap.. The 1s is too short

2017-09-08 18:16:57.071859 I | embed: listening for client requests on 0.0.0.0:2379
2017-09-08 18:16:58.276640 W | etcdserver: could not get cluster response from http://test-etcd-w7s0f-0000.test-etcd-w7s0f.e2e-etcd-operator-2264.svc:2380: Get http://test-etcd-w7s0f-0000.test-etcd-w7s0f.e2e-etcd-operator-2264.svc:2380/members: dial tcp: i/o timeout
2017-09-08 18:16:58.336459 C | etcdmain: cannot fetch cluster info from peer urls: could not retrieve cluster information from the given urls

[hongchaodeng]

cc @fanminshi

[hongchaodeng]

This is fixed since we added checking in init container.