enable flake8-commas to enforce trailing commas
enable flake8-commas to enforce trailing commas

Change-Id: I812b5ae20aa73476c1a316bd769fff06f0998d5b
Signed-off-by: Ross Brattain <ddebe0db9486ace8e4376a8be8a0aaa0090ac511@intel.com>

orestkreminskyi/taf,taf3/taf,orestkreminskyi/taf,taf3/taf,orestkreminskyi/taf,taf3/taf