cri-o: change to system runc

Newer versions of cri-o do not carry runc but use the one
from the system.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

roles/docker/templates/crio.conf.j2

@@ -43,7 +43,7 @@ stream_port = "10010"
 # This is a mandatory setting as this runtime will be the default one
 # and will also be used for untrusted container workloads if
 # runtime_untrusted_workload is not set.
-runtime = "/usr/libexec/crio/runc"
+runtime = "/usr/bin/runc"
 
 # runtime_untrusted_workload is the OCI compatible runtime used for untrusted
 # container workloads. This is an optional setting, except if