Add format for OpenStack Keystone log files
Add format for OpenStack Keystone log files

Keystone logs are formatted differently than the other OpenStack
service logs.

Signed-off-by: Nicolas Bock <f98f0827b96d4d55ae7f19f2b371a91ca0f3d663@gmail.com>

tstack/lnav,sureshsundriyal/lnav,sureshsundriyal/lnav,tstack/lnav,sureshsundriyal/lnav,tstack/lnav,sureshsundriyal/lnav,tstack/lnav