The bashate job, a voting job, has been failing for a while due to
two bugs. Fix the two bugs that require modifications to tox's
configuration file, tox.ini.
Bug #1527562
Remove inline comments after line escape that isn't understood
by tox's ini parser.
This is due to the backward incompatible fix for,
https://bitbucket.org/hpk42/tox/issues/181
Bug #1554019
Ignore .xml files that do not need to comply with bashate.
Closes-Bug: #1527562
Closes-Bug: #1554019
Change-Id: Id11275d5d15e30d2558a475a4877e6d71bdc6726