iproto: add missing IPROTO feature flags to greeting negotiation

The flags of functions IPROTO_FEATURE_IS_SYNC and IPROTO_FEATURE_INSERT_ARROW protocol function flags were added in the welcome, fixed tests that test for flags by adding a byte sequence.

Fixed #466

Author: babyTsakhes

dial_test.go

@@ -343,7 +343,7 @@ var (
 	testDialSalt = genSalt()
 
 	idRequestExpected = []byte{
-		0xce, 0x00, 0x00, 0x00, 29, // Length.
+		0xce, 0x00, 0x00, 0x00, 31, // Length.
 		0x82, // Header map.
 		0x00, 0x49,
 		0x01, 0xce, 0x00, 0x00, 0x00, 0x00,
@@ -352,7 +352,8 @@ var (
 		0x54,
 		0xcf, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, // Version.
 		0x55,
-		0x97, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, // Features.
+		0x99,                                                 //  Fixed arrау with 9 elements.
+		0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x0b, 0x0c, // Features (9 elements).
 	}
 
 	idResponseTyped = tarantool.ProtocolInfo{

protocol.go

@@ -58,6 +58,8 @@ var clientProtocolInfo ProtocolInfo = ProtocolInfo{
 		iproto.IPROTO_FEATURE_PAGINATION,
 		iproto.IPROTO_FEATURE_SPACE_AND_INDEX_NAMES,
 		iproto.IPROTO_FEATURE_WATCH_ONCE,
+		iproto.IPROTO_FEATURE_IS_SYNC,
+		iproto.IPROTO_FEATURE_INSERT_ARROW,
 	},
 }