Add vm_name option to vsphere cloud provider config

roles/kubernetes/node/templates/vsphere-cloud-config.j2

@@ -14,6 +14,9 @@ server = "{{ vsphere_vcenter_ip }}"
 {% if vsphere_vm_uuid is defined and vsphere_vm_uuid != ""  %}
 vm-uuid = "{{ vsphere_vm_uuid }}"
 {% endif %}
+{% if vsphere_vm_name is defined and vsphere_vm_name != ""  %}
+vm-name = "{{ vsphere_vm_name }}"
+{% endif %}
 {% endif %}
 
 {% if kube_version | version_compare('v1.9.2', '>=') %}