r/virtual_machine: Relocate VMs after create

The host attribute of CreateVM_Task is being ignored in vCenter 6.7.
Adding a host check and reloaction step to ensure that VMs land on
the correct host.

vsphere/resource_vsphere_virtual_machine.go

@@ -266,6 +266,31 @@ func resourceVSphereVirtualMachineCreate(d *schema.ResourceData, meta interface{
 		}
 	}
 
+	// The host attribute of CreateVM_Task seems to be ignored in vCenter 6.7.
+	// Ensure that VMs are on the correct host and relocate if necessary. Do this
+	// near the end of the VM creation since it involves updating the
+	// ResourceData.
+	vprops, err := virtualmachine.Properties(vm)
+	if err != nil {
+		return err
+	}
+	if d.Get("host_system_id").(string) != vprops.Runtime.Host.Reference().Value {
+		hid := d.Get("host_system_id").(string)
+		err = resourceVSphereVirtualMachineRead(d, meta)
+		if err != nil {
+			return err
+		}
+		// Restore the old host_system_id so we can still tell if a relocation is
+		// necessary.
+		err = d.Set("host_system_id", hid)
+		if err != nil {
+			return err
+		}
+		if err = resourceVSphereVirtualMachineUpdateLocation(d, meta); err != nil {
+			return err
+		}
+	}
+
 	// Wait for a routable address if we have been set to wait for one
 	err = virtualmachine.WaitForGuestNet(
 		client,