This option u'required-attributes' will be removed in Pylint 2.0
This option u'ignore-iface-methods' will be removed in Pylint 2.0
Test: pylint (1.6.5) no longer gives above warnings.
Change-Id: Ib07cd5aef87407260140c1fca0b11c439cbdf390
This caught a few bugs/syntax errors (a few character classes were not
escaped properly in regex patterns, some indentation was illegal,
etc).
Change-Id: I50637607524e68c4fb9cad7167f58a46b8d26b2c