[Bug 1274854] New: kubectl exec: handshake did not verify certificate chain

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1274854

Bug ID: 1274854
           Summary: kubectl exec: handshake did not verify certificate
                    chain
           Product: Fedora
           Version: 23
         Component: kubernetes
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail]

Description of problem:

kubectl exec fails like this on Fedora 23:

# kubectl exec mock-ooycy /bin/sh -i
error: Unable to upgrade connection: {
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {},
  "status": "Failure",
  "message": "tls: handshake did not verify certificate chain",
  "code": 500
}

Version-Release number of selected component (if applicable):

kubernetes-1.1.0-0.16.git388061f.fc23.x86_64

How reproducible:

Every time

Steps to Reproduce:
1. See above