From https://github.com/openshift/origin/pull/4703 Currently, if I specify a client certificate and do not specify the server's CA, the system trusted CAs are not used.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2015:1854