Update oslo-incubator log module

Changes -
 * Remove None for dict.get()
 * Rename Openstack to OpenStack
 * Fix deprecated messages sent multiple times
 * Use ContextFormatter for imparting context info

Change-Id: I8bf9551081177c756430e536489ef6608b3f488d
Update oslo-incubator loopingcall module

Changes -
 * Update oslo log messages with translation domains

Change-Id: Iafe4dd11b36c0791a7b79922e06d5774ed4e3423
Update oslo-incubator periodic_task module

Changes -
 * Update oslo log messages with translation domains

Change-Id: I78343e4a2b1f74cdac13dc17d21a19fffe1017cb
Update oslo-incubator processutils module

Changes -
 * Update oslo log messages with translation domains

Change-Id: I49cf57fc384d029718cccf451fe8fb68868cfe14
Merge "Update oslo-incubator log module"
Merge "Update oslo-incubator loopingcall module"
Merge "Update oslo-incubator periodic_task module"
Merge "Update oslo-incubator processutils module"