Remove use of hacking lib

Current hacking library pins on a version of flake8 that is too
old to recognize some py3.5'isms.

Adds ignores for:
  E305 expected 2 blank lines after class or function definition
  E402 module level import not at top of file
  F405 'AnsibleModule' may be undefined, or defined from star imports
  W503 line break before binary operator

Change-Id: I30ae2b6745c8696c58ef1d57790b4268c22cd356
2 files changed