Merge pull request #721 from dnephin/fix_broken_tests

Include image name for env_file tests
Stronger integration tests for volume binds

Signed-off-by: Aanand Prasad <aanand.prasad@gmail.com>
Merge pull request #728 from aanand/volume_test

Stronger integration test for volume binds
Merge branch 'master' of github.com:docker/fig