test_compose_tar: Work around selinux policy change

A compose can change the hosts' policy, which can lead to docker
crashing if the container-selinux policy is not included. Add a
workaround and bug link.

tests/cli/test_compose_tar.sh

@@ -31,6 +31,13 @@ rlJournalStart
             rlFail "Compose UUID is empty!"
         fi
 
+        # Running a compose can lead to a different selinux policy in the
+        # kernel, which may break docker. Reload the policy from the host and
+        # restart docker as a workaround.
+        # See https://bugzilla.redhat.com/show_bug.cgi?id=1711813
+        semodule -R
+        systemctl restart docker
+
         rlRun -t -c "$CLI compose image $UUID"
         IMAGE="$UUID-root.tar.xz"
     rlPhaseEnd