tests/checkpoint: enable for Fedora 31 / cgroup v2

With the fix in the previous commit and criu patched with support for
cgroupv2, these tests should now pass.

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

Vagrantfile

@@ -15,9 +15,27 @@ Vagrant.configure("2") do |config|
   config.vm.provision "shell", inline: <<-SHELL
     cat << EOF | dnf -y shell
 update
-install podman make golang-go libseccomp-devel bats jq
+install podman make golang-go libseccomp-devel bats jq \
+ patch protobuf protobuf-c protobuf-c-devel protobuf-compiler \
+ protobuf-devel protobuf-python libnl3-devel libcap-devel libnet-devel \
+ nftables-devel libbsd-devel gnutls-devel
 ts run
 EOF
     dnf clean all
+
+    # TODO: remove this after criu 3.14 is released
+    rpm -e --nodeps criu || true
+    CRIU_VERSION=v3.13
+    mkdir -p /usr/src/criu \
+        && curl -fsSL https://github.com/checkpoint-restore/criu/archive/${CRIU_VERSION}.tar.gz | tar -C /usr/src/criu/ -xz --strip-components=1 \
+        && cd /usr/src/criu \
+        && echo 1 > .gitid \
+        && curl -sSL https://github.com/checkpoint-restore/criu/commit/4c27b3db4f4325a311d8bfa9a50ea3efb4d6e377.patch | patch -p1 \
+        && curl -sSL https://github.com/checkpoint-restore/criu/commit/aac41164b2cd7f0d2047f207b32844524682e43f.patch | patch -p1 \
+        && curl -sSL https://github.com/checkpoint-restore/criu/commit/6f19249b2565f3f7c0a1f8f65b4ae180e8f7f34b.patch | patch -p1 \
+        && curl -sSL https://github.com/checkpoint-restore/criu/commit/378337a496ca759848180bc5411e4446298c5e4e.patch | patch -p1 \
+        && make install-criu \
+        && cd - \
+        && rm -rf /usr/src/criu
   SHELL
 end

tests/integration/checkpoint.bats

@@ -3,8 +3,6 @@
 load helpers
 
 function setup() {
-  # All checkpoint tests are currently failing on v2
-  requires cgroups_v1
   # XXX: currently criu require root containers.
   requires criu root