move TestKillDifferentUser

Signed-off-by: Victor Vieux <vieux@docker.com>
move TestEntrypoint & TestBindMounts

Signed-off-by: Victor Vieux <vieux@docker.com>
remove auth_test.go

Signed-off-by: Victor Vieux <vieux@docker.com>
Merge pull request #7767 from vieux/move_some_tests

Move some tests