
Older hacking depends on pep8, but pep8 module is replaced by pycodestyle. This can be resolved by updating hackinng version. This commit also fixes E117 (over-indented) and W605 (invalid escape sequence) warnings. pep8 is dropped from lower-constraints.txt as it is no longer used. Change-Id: I3a8e3b0dedf9422e4db02b525b333d12ce012a95