Ignore fewer PEP8/flake8 rules

Reasons:
- code should be pythonicaly clean,
  that is why number of ignored rules should reduced

Changes:
- E125, F811, H102, H103, F201, H23,
  H302, F841, H301, H702, H703 rules are now enabled

Change-Id: Ibf4025162244d3c2f1278b49a76ec1527a729042