provider/opc: Remove 'model' from instance networking

Removes `model` as a configurable attribute in instance networking.

Also adds missing `name` attribute from `ip_reservation` docs

```
$ make testacc TEST=./builtin/providers/opc TESTARGS="-run=TestAccOPCInstance_ipNetwork"
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/04/06 12:53:13 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/opc -v -run=TestAccOPCInstance_ipNetwork -timeout 120m
=== RUN   TestAccOPCInstance_ipNetwork
--- PASS: TestAccOPCInstance_ipNetwork (258.69s)
PASS
ok      github.com/hashicorp/terraform/builtin/providers/opc    258.721s
```

```
$ make testacc TEST=./builtin/providers/opc TESTARGS="-run=TestAccOPCInstance_sharedNetworking"
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/04/06 12:58:43 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/opc -v -run=TestAccOPCInstance_sharedNetworking -timeout 120m
=== RUN   TestAccOPCInstance_sharedNetworking
--- PASS: TestAccOPCInstance_sharedNetworking (253.15s)
PASS
ok      github.com/hashicorp/terraform/builtin/providers/opc    253.180s
```

builtin/providers/opc/resource_instance.go

@@ -128,20 +128,6 @@ func resourceInstance() *schema.Resource {
 							Optional: true,
 						},
 
-						"model": {
-							// Required, Shared Network only.
-							Type:     schema.TypeString,
-							Optional: true,
-							ForceNew: true,
-							ValidateFunc: func(v interface{}, k string) (ws []string, errors []error) {
-								value := v.(string)
-								if value != "e1000" {
-									errors = append(errors, fmt.Errorf("Model needs to be set to 'e1000', got: %s", value))
-								}
-								return
-							},
-						},
-
 						"name_servers": {
 							// Optional, IP Network + Shared Network
 							Type:     schema.TypeList,
@@ -205,7 +191,6 @@ func resourceInstance() *schema.Resource {
 					buf.WriteString(fmt.Sprintf("%d-", m["index"].(int)))
 					buf.WriteString(fmt.Sprintf("%s-", m["vnic"].(string)))
 					buf.WriteString(fmt.Sprintf("%s-", m["nat"]))
-					buf.WriteString(fmt.Sprintf("%s-", m["model"].(string)))
 					return hashcode.String(buf.String())
 				},
 			},
@@ -618,6 +603,8 @@ func readNetworkInterfacesFromConfig(d *schema.ResourceData) (map[string]compute
 			if ni["shared_network"].(bool) {
 				// Populate shared network parameters
 				info, err = readSharedNetworkFromConfig(ni)
+				// Set 'model' since we're configuring a shared network interface
+				info.Model = compute.NICDefaultModel
 			} else {
 				// Populate IP Network Parameters
 				info, err = readIPNetworkFromConfig(ni)
@@ -703,7 +690,6 @@ func readSharedNetworkFromConfig(ni map[string]interface{}) (compute.NetworkingI
 // function based off of multiple fields in the supplied schema.
 func validateSharedNetwork(ni map[string]interface{}) error {
 	// A Shared Networking Interface MUST have the following attributes set:
-	// - "model"
 	// - "nat"
 	// The following attributes _cannot_ be set for a shared network:
 	// - "ip_address"
@@ -711,9 +697,6 @@ func validateSharedNetwork(ni map[string]interface{}) error {
 	// - "mac_address"
 	// - "vnic"
 	// - "vnic_sets"
-	if d, ok := ni["model"]; !ok || d.(string) == "" {
-		return fmt.Errorf("'model' field needs to be set for a Shared Networking Interface")
-	}
 
 	if _, ok := ni["nat"]; !ok {
 		return fmt.Errorf("'nat' field needs to be set for a Shared Networking Interface")
@@ -820,19 +803,12 @@ func readIPNetworkFromConfig(ni map[string]interface{}) (compute.NetworkingInfo,
 func validateIPNetwork(ni map[string]interface{}) error {
 	// An IP Networking Interface MUST have the following attributes set:
 	// - "ip_network"
-	// The following attributes _cannot_ be set for an IP Network:
-	// - "model"
 
 	// Required to be set
 	if d, ok := ni["ip_network"]; !ok || d.(string) == "" {
 		return fmt.Errorf("'ip_network' field is required for an IP Network interface")
 	}
 
-	// Requird to be unset
-	if d, ok := ni["model"]; ok && d.(string) != "" {
-		return fmt.Errorf("'model' cannot be set in an IP Network Interface")
-	}
-
 	return nil
 }
 
@@ -872,7 +848,6 @@ func readNetworkInterfaces(d *schema.ResourceData, ifaces map[string]compute.Net
 			res["mac_address"] = iface.MACAddress
 		}
 		if iface.Model != "" {
-			res["model"] = iface.Model
 			// Model can only be set on Shared networks
 			res["shared_network"] = true
 		}

builtin/providers/opc/resource_instance_test.go

@@ -67,7 +67,6 @@ func TestAccOPCInstance_sharedNetworking(t *testing.T) {
 					// Check Data Source to validate networking attributes
 					resource.TestCheckResourceAttr(dataName, "shared_network", "true"),
 					resource.TestCheckResourceAttr(dataName, "nat.#", "1"),
-					resource.TestCheckResourceAttr(dataName, "model", "e1000"),
 					resource.TestCheckResourceAttr(dataName, "sec_lists.#", "1"),
 					resource.TestCheckResourceAttr(dataName, "name_servers.#", "0"),
 					resource.TestCheckResourceAttr(dataName, "vnic_sets.#", "0"),
@@ -205,7 +204,6 @@ resource "opc_compute_instance" "test" {
   tags = ["tag1", "tag2"]
   networking_info {
     index = 0
-    model = "e1000"
     nat = ["ippool:/oracle/public/ippool"]
     shared_network = true
   }

website/source/docs/providers/opc/r/opc_compute_ip_reservation.html.markdown

@@ -30,6 +30,8 @@ The following arguments are supported:
 (if true), or may be returned to the pool and replaced with a different IP address when an instance is restarted, or
 deleted and recreated (if false).
 
+* `name` - (Optional) Name of the IP Reservation. Will be generated if unspecified.
+
 * `tags` - (Optional) List of tags that may be applied to the IP reservation.
 
 ## Import