Disable CertVerifyProcTest TestKnownRoot and PublicKeyHashes

Comment in TestKnownRoot indicates that it and PublicKeyHashes will
fail on May 9, 2016, and they did. Disabling for now.

BUG=610546
TBR=agl@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/1959083003
Cr-Commit-Position: refs/heads/master@{#392503}
1 file changed