Enable cgroupv2 integration tests

Those needs to be run on the (Vagrant Fedora 31) host
(since we need real systemd running), and so we have
to copy runc binary and bats out of the container
to the vagrant host.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.travis.yml

@@ -34,6 +34,9 @@ matrix:
         - sudo ssh default sudo podman build -t test /vagrant
         # Mounting /lib/modules into the container is necessary as CRIU wants to load (via iptables) additional modules
         - sudo ssh default sudo podman run --privileged --cgroupns=private -v /lib/modules:/lib/modules:ro test make localunittest
+        # Copy bats and compiled runc binary from test image to vagrant host
+        - sudo ssh default 'sudo podman run --rm test tar cf - /usr/local/bin/bats /usr/local/libexec/bats* | sudo tar xf - -C / && sudo podman run --rm test tar cf - runc | sudo tar xf - -C /vagrant'
+        - sudo ssh default 'cd /vagrant && sudo RUNC_USE_SYSTEMD=yes bats -t tests/integration'
   allow_failures:
     - go: tip