e2e master is failing

[hongchaodeng]

https://jenkins-etcd.prod.coreos.systems/job/etcd-operator-master/749/

time="2018-01-05T10:53:34Z" level=error msg="fail to setup framework: failed to setup etcd operator: failed to wait pod running, it is still pending: still failing after 12 retries" 
FAIL	github.com/coreos/etcd-operator/test/e2e	61.341s

Tried it twice and failed consistently.

[hasbro17]

Taking a look at this.

[hongchaodeng]

The root:

Jenkins Workspace Cleanup plugin failed to delete, and leaving many timestamp-ed job dirs (one per build!):

# ls workspace/
etcd-operator-master_ws-cleanup_1515185270677
etcd-operator-master_ws-cleanup_1515186750450

Each job dir consumes 330MB. vendor/ consumes 180MB and _output/ consume 120MB.

[hongchaodeng]

If we could set the dir permissions correctly, the workspace cleanup should work.