vitessdriver: Replace occurrences of v2 with v1 because that's what I actually meant.

go/vt/vitessdriver/driver.go

@@ -37,7 +37,7 @@ func Open(address, tabletType string, timeout time.Duration) (*sql.DB, error) {
 // OpenShard connects to vtgate running at "address".
 //
 // Unlike Open(), all queries will target a specific shard in a given keyspace
-// ("fallback" mode to vtgate v2).
+// ("fallback" mode to vtgate v1).
 //
 // This mode is recommended when you want to try out Vitess initially because it
 // does not require defining a VSchema. Just replace the MySQL/MariaDB driver
@@ -148,7 +148,7 @@ type Configuration struct {
 
 	// Keyspace of a specific keyspace and shard to target. Disables vtgate v3.
 	//
-	// If Keyspace and Shard are not empty, vtgate v2 instead of v3 will be used
+	// If Keyspace and Shard are not empty, vtgate v1 instead of v3 will be used
 	// and all requests will be sent only to that particular shard.
 	// This functionality is meant for initial migrations from MySQL/MariaDB to Vitess.
 	Keyspace string

go/vt/vitessdriver/driver_test.go

@@ -153,7 +153,7 @@ func TestExec(t *testing.T) {
 			requestName: "request1",
 		},
 		{
-			desc: "vtgate v2",
+			desc: "vtgate v1",
 			config: Configuration{
 				Protocol:   "grpc",
 				Address:    testAddress,
@@ -240,7 +240,7 @@ func TestQuery(t *testing.T) {
 			requestName: "request1",
 		},
 		{
-			desc: "non-streaming, vtgate v2",
+			desc: "non-streaming, vtgate v1",
 			config: Configuration{
 				Protocol:   "grpc",
 				Address:    testAddress,
@@ -263,7 +263,7 @@ func TestQuery(t *testing.T) {
 			requestName: "request1",
 		},
 		{
-			desc: "streaming, vtgate v2",
+			desc: "streaming, vtgate v1",
 			config: Configuration{
 				Protocol:   "grpc",
 				Address:    testAddress,
@@ -367,7 +367,7 @@ func TestTx(t *testing.T) {
 			requestName: "txRequest",
 		},
 		{
-			desc: "vtgate v2",
+			desc: "vtgate v1",
 			config: Configuration{
 				Protocol:   "grpc",
 				Address:    testAddress,