dockertest: run fix import and force repo busybox in run_remote_tag.

+ fix syntax in attach to avoid skipping of super class function.

Signed-off-by: Jiří Župka <jzupka@redhat.com>
Merge branch 'fix_run' of https://github.com/jzupka/autotest-docker into docker_0.7.2
squash! dockertest: run fix import and force repo busybox in run_remote_tag.

Signed-off-by: Chris Evich <cevich@redhat.com>
subtests/docker_cli/attach: Pylint fixups

*  Add methods for matching expected
   or unexpected configuration strings
   against docker command output.

*  Add method to assemble list of
   sub-subtest specific parameters
   to output-matching methods.

*  Make postprocess method generic,
   by taking result of assembling
   parameter lists, and passing them
   to matching methods.

*  Make sig_proxy sub-subtests postprocess
   generic by using new specialized
   check_containers() method.

Signed-off-by: Chris Evich <cevich@redhat.com>