Using generated cert/key with curl on OS X doesn't work

[liggitt]

This is failing test-cmd.sh, etc

Running openshift start and curling the API server is failing:

$ openshift start &
$ cd openshift.local.certificates/admin
$ curl --cacert root.crt --cert cert.crt --key key.key https://localhost:8443/healthz

[liggitt]

/cc @smarterclayton @deads2k

[liggitt]

dupe of #1011