Add symlinks for node templates.

This is an unfortunate side effect of including a role yaml file in a
playbook, ideally we would just run the full node role here.

For now we'll follow the lead for the master template.

playbooks/common/openshift-cluster/upgrades/v3_1_to_v3_2/openshift.docker.node.dep.service

@@ -0,0 +1 @@
+../../../../../roles/openshift_node/templates/openshift.docker.node.dep.service

playbooks/common/openshift-cluster/upgrades/v3_1_to_v3_2/openshift.docker.node.service

@@ -0,0 +1 @@
+../../../../../roles/openshift_node/templates/openshift.docker.node.service

playbooks/common/openshift-cluster/upgrades/v3_1_to_v3_2/openvswitch.docker.service

@@ -0,0 +1 @@
+../../../../../roles/openshift_node/templates/openvswitch.docker.service

playbooks/common/openshift-cluster/upgrades/v3_1_to_v3_2/openvswitch.sysconfig.j2

@@ -0,0 +1 @@
+../../../../../roles/openshift_node/templates/openvswitch.sysconfig.j2