... to enforce maximum line length, to keep consistent code format.
Note that E501 check is disabled in test code now, until we decide how
to update ~50 lines violating the limit due to too long names.
Change-Id: I122c8b9035d6381dafb34438517c26b01e5201f5
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>