Changes import orders to pass H305 check

Changes import orders to H305 check in hacking 0.9.x
Leaves H305 in ignore setting in tox.ini
due to hacking is confused by oslo.* namespace
when checking import rules
see https://bugs.launchpad.net/hacking/+bug/1329363

Change-Id: I1701574b5e1a8cde1a044cda90a0c95360bb0825
Updates one line docstring with dot to pass H402

Updates one line docstring with dot to pass H402.
Removes H402 from ignore setting in tox.ini.

Change-Id: Ibb4f16cbb3bb453456b579e0fafbd3f4c4e60aff
Adds empty line to multilines docs to pass H405

Adds empty line to multilines docs to pass H405 check.
Removes H405 from ignore setting in tox.ini.

Change-Id: I0516fb12765bf961a4488570a6c73b80f667d972
Uses keyword params for i18n string to pass H703

Uses keyword params for i18n string to pass H703 check.
Removes H703 from ignore setting in tox.ini.

Change-Id: I7b4f48be739167aed7dcb33a8a70e24adfe02672