Do not disable pylint no-member in acme.

https://github.com/letsencrypt/lets-encrypt-preview/pull/117#discussion_r21537130
Remove unecessary whitespace in apache_configurator
clean apache_configurator_test, fixes #123
Remove MyPopen
Accept names in VH.__init__
Merge pull request #125 from kuba/pr/117

Clean up after #117, fixes #123