tree 329efc9359a28b1c672f4ea13df218b2310e59ea
parent d81365e1c7d0f6c41656e6cc5dac21eea89d277a
author Will Angley <willangley@google.com> 1474075233 -0400
committer Will Angley <willangley@google.com> 1474315411 -0400

authorizer: fix bugs and expire cache

Since the server wipes out existing users when their authorization
expires, periodically rerun checks for cached users and revoke their
authorization if the checks fail.

Also, make sure we only have one checker live for users at a time.
Resolves the issue where a user would be added to firewall rules
multiple times.

Change-Id: I05685e93198a0bc21fe6e2ac52e0cb6db90f2691