Updated openstack/openstack
Project: openstack/nova  e60dc25a9973463e942bdc268e508445a42faab9
null
Refactor time conversion helper function for objects in db api

Refactor the code to use common time conversion code for objects. Strip
timezone info out from datetimes, which is no need for database.

This is a part of: blueprint make-instance-action-use-objects

Change-Id: Id7f8b48da1499ded3418ceebe4680e066420e2a3