oslo-sync of low hanging fruit

Generated with:
 ./update.sh --base novaclient --config-file
../python-novaclient/openstack-common.conf --dest-dir
../python-novaclient/

Skipped modules: apiclient and cliutils due to oslo issue in apiclient
(cliutils depends on apiclient).
https://review.openstack.org/#/c/76718/

Removed non-existent modules from openstack-commit.conf:
  py3kcompat I06b90f789ae21f2ef8b8071b4298bfc0406482a6
  intall_venv_common I84267f3c6726cb2e750f615e107c48b12c6ed353

Synced patches:
__init__.py [first sync]:
   c178e56 Add basic Python 3 tests
  12bcdb7 Remove vim header
  547ab34 Fix Copyright Headers - Rename LLC to Foundation
  96b9a54 Rajaram/Vinkesh|Added nova's serializaiton classes into common
  c85e1f7 Initial skeleton project

gettextutils:
  6d55e26 Add support for translating log levels separately
  afdbc0a Fix E501 in individual openstack projects
  6b2d15f Merge "Add support for locales missing from babel"
  9d529dd Make Message keep string interpolation args

importutils:
  885828a Deleted duplicated method in cliutils.

strutils:
  bec3a5e Implements SI/IEC unit system conversion to bytes

timeutils:
 d815087 Merge "Fix spelling errors in comments"
 71208fe Fix spelling errors in comments

Change-Id: I8f82acb63e61a64eeb6caba9d2d9c81d9cb766d8
Merge "oslo-sync of low hanging fruit"