FIX test failures

[baude]

Fix test failures that have crept into the atomic master.

tests/integration/test_display.sh
Fix failure related to defined UID/GID's in the test itself. I now
use sed to remove the --user UID:GID to make the comparison equal
and remove potential for dynamic failures.

I also had to add a conditional if the labels (in python) are of
type None to prevent a traceback.

tests/integration/test_info.sh
There seemed to be two related failures in the test case that relate to
running 'atomic info --remote'. If that command is run with a docker
daemon that is not capable of --remote, the test will failure. I added
a variable based on the return of that command and put it under the
set +e section.

I then added a conditional for that test (based on the return of above),
to only run the test if the docker daemon is capable of the --remote
function.

[rhatdan]

LGTM