Automatic merge from submit-queue
Fix cockroachdb statefulset test read/write commands
Explicitly specifying `--insecure` is required on insecure clusters,
which started being enforced in a very recent release. In 2 weeks
we'll have a stable image version that we can reliably pin the
relevant statefulset yaml file to in order to avoid stupid failures
like this. I'm really sorry for the flakes!
**What this PR does / why we need it**:
It fixes the currently broken statefulset test suite - https://storage.googleapis.com/k8s-gubernator/triage/index.html?job=gci-gce-statefulset&test=CockroachDB
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:
N/A
**Special notes for your reviewer**:
N/A
**Release note**:
```release-note
NONE
```
@kow3ns