Initial cleanup.

tests/integration/targets/docker_node/aliases

@@ -1,12 +1,3 @@
 shippable/posix/group2
-skip/aix
-skip/osx
-skip/macos
-skip/freebsd
 destructive
-skip/docker  # The tests sometimes make docker daemon unstable; hence,
-             # we skip all docker-based CI runs to avoid disrupting
-             # the whole CI system. On VMs, we restart docker daemon
-             # after finishing the tests to minimize potential effects
-             # on other tests.
 needs/root