Import ditributed port group using moid (#1208)

* Update ReadMe

* Modifying distributed port group import function to import using managed object id instead of path

* fixing readme

vsphere/resource_vsphere_distributed_port_group.go

@@ -226,8 +226,8 @@ func resourceVSphereDistributedPortGroupImport(d *schema.ResourceData, meta inte
 	if err := viapi.ValidateVirtualCenter(client); err != nil {
 		return nil, err
 	}
-	p := d.Id()
-	pg, err := dvportgroup.FromPath(client, p, nil)
+	moId := d.Id()
+	pg, err := dvportgroup.FromMOID(client, moId)
 	if err != nil {
 		return nil, fmt.Errorf("error locating portgroup: %s", err)
 	}

website/docs/r/distributed_port_group.html.markdown

@@ -235,14 +235,13 @@ ID][docs-about-morefs] to another resource, be sure to use the `id` field.
 
 ## Importing
 
-An existing port group can be [imported][docs-import] into this resource via
-the path to the port group, via the following command:
+An existing port group can be [imported][docs-import] into this resource using
+the managed object id of the port group, via the following command:
 
 [docs-import]: https://www.terraform.io/docs/import/index.html
 
 ```
-terraform import vsphere_distributed_port_group.pg /dc1/network/pg
+terraform import vsphere_distributed_port_group.pg dvportgroup-67
 ```
 
-The above would import the port group named `pg` that is located in the `dc1`
-datacenter.
+The above would import the port group named `pg` with managed object id `dvportgroup-67`.