enable verbose log and logging to /var/log/keystone/keystone.log
To shift the timing to change owner of /var/log/keystone/
Pin keystone version to a commit instead of stable/havana to prevent problem while stable/keystone branch be removed in the end of dev cycle.
The token=uuid was deprecated. To replace it with new parameters under [token] section
Merge pull request #4 from swiftstack/enable-log

Enable log