Use either esxi:dc,host OR cluster,resource_pool

vsphere_guest now can deploy a template using a datacenter and hostname
as the target, instead of requiring a cluster and resource_pool.

This commit fixes #951.

Signed-off-by: Vyronas Tsingaras <vtsingaras@it.auth.gr>

lib/ansible/modules/cloud/vmware/vsphere_guest.py

@@ -519,6 +519,56 @@ def deploy_template(vsphere_client, guest, resource_pool, template_src, esxi, mo
     vmTemplate = vsphere_client.get_vm_by_name(template_src)
     vmTarget = None
 
+    if esxi:
+        datacenter = esxi['datacenter']
+        esxi_hostname = esxi['hostname']
+
+        # Datacenter managed object reference
+        dclist = [k for k,
+                 v in vsphere_client.get_datacenters().items() if v == datacenter]
+        if dclist:
+            dcmor=dclist[0]
+        else:
+            vsphere_client.disconnect()
+            module.fail_json(msg="Cannot find datacenter named: %s" % datacenter)
+
+        dcprops = VIProperty(vsphere_client, dcmor)
+
+        # hostFolder managed reference
+        hfmor = dcprops.hostFolder._obj
+
+        # Grab the computerResource name and host properties
+        crmors = vsphere_client._retrieve_properties_traversal(
+            property_names=['name', 'host'],
+            from_node=hfmor,
+            obj_type='ComputeResource')
+
+        # Grab the host managed object reference of the esxi_hostname
+        try:
+            hostmor = [k for k,
+                       v in vsphere_client.get_hosts().items() if v == esxi_hostname][0]
+        except IndexError, e:
+            vsphere_client.disconnect()
+            module.fail_json(msg="Cannot find esx host named: %s" % esxi_hostname)
+
+        # Grab the computeResource managed object reference of the host we are
+        # creating the VM on.
+        crmor = None
+        for cr in crmors:
+            if crmor:
+                break
+            for p in cr.PropSet:
+                if p.Name == "host":
+                    for h in p.Val.get_element_ManagedObjectReference():
+                        if h == hostmor:
+                            crmor = cr.Obj
+                            break
+                    if crmor:
+                        break
+        crprops = VIProperty(vsphere_client, crmor)
+
+        rpmor = crprops.resourcePool._obj
+    elif resource_pool:
         try:
             cluster = [k for k,
                        v in vsphere_client.get_clusters().items() if v == cluster_name][0]
@@ -535,6 +585,8 @@ def deploy_template(vsphere_client, guest, resource_pool, template_src, esxi, mo
             vsphere_client.disconnect()
             module.fail_json(msg="Cannot find Resource Pool named: %s" %
                              resource_pool)
+    else:
+        module.fail_json(msg="You need to specify either esxi:[datacenter,hostname] or [cluster,resource_pool]")
 
     try:
         vmTarget = vsphere_client.get_vm_by_name(guest)