Cleanup and adding timing to lockutils logging
Cleanup and adding timing to lockutils logging

* Cleanup lockutils logging by showing lock name and function in
same line.  The enables easier parsing of information related to lock
acquisition from logs.

* Logs time a thread spent waiting on locks, as well as time spent
holding locks.  This will make it easier to debug suboptimal locking.

Change-Id: Ic310d84eb1ed75cc1c21c3d7861b4a3927ebaf23

JioCloud/oslo.concurrency,varunarya10/oslo.concurrency,openstack/oslo.concurrency