minica.py: don't encode default critical=False values

Also add some helper code to make updating the ocsp-test-root easier.

BUG=none

Review-Url: https://codereview.chromium.org/2382423002
Cr-Original-Commit-Position: refs/heads/master@{#422529}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 3b4376f1d53c435d13dbcc9330c824292a793b2a
1 file changed