Shorten PKI token logging

Log only the first 12 characters of auth-token for the Swift
API, since PKI based auth-tokens from keystone can huge (>> 2K).

Also tidy up a comment.

Change-Id: Ib784e8ecdcb7e371fe03458c7fd82b4460fa82b9
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Use the swift logging adapter for txn IDs

Change-Id: I2b2308eb9606279cffc1965fc3b86e9597d63e87
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Merge "Shorten PKI token logging"
Merge "Use the swift logging adapter for txn IDs"
Merge branch 'master' of github.com:openstack-dev/devstack