Updated openstack/openstack
Project: openstack/nova  f5ee68aa6f71c00a5f60aec1e59ea804bfd93715

Sync loopingcall from oslo

This change syncs:

bc48099 Log the function name of looping call
ab5d5f1 Use timestamp in loopingcall
e377393 Changes calcuation of variable delay

Change-Id: Ie93695b2b76bc258922495911bc40c5aaf414a91