VOL-1691 Fix openolt adapter getting stuck while registartion with core

Change-Id: Ide8131f325bc15f1b909e14d7af6ee9bcd6b3b5b
diff --git a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
index 62ed0f2..11be7cd 100644
--- a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
+++ b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
@@ -34,13 +34,9 @@
 type RequireHandshakeSetting int
 
 const (
-	// RequireHandshakeHybrid (default, deprecated) indicates to not wait for
-	// handshake before considering a connection ready, but wait before
-	// considering successful.
-	RequireHandshakeHybrid RequireHandshakeSetting = iota
-	// RequireHandshakeOn (default after the 1.17 release) indicates to wait
-	// for handshake before considering a connection ready/successful.
-	RequireHandshakeOn
+	// RequireHandshakeOn indicates to wait for handshake before considering a
+	// connection ready/successful.
+	RequireHandshakeOn RequireHandshakeSetting = iota
 	// RequireHandshakeOff indicates to not wait for handshake before
 	// considering a connection ready/successful.
 	RequireHandshakeOff
@@ -53,7 +49,7 @@
 	// environment variable.
 	//
 	// Will be removed after the 1.18 release.
-	RequireHandshake RequireHandshakeSetting
+	RequireHandshake = RequireHandshakeOn
 )
 
 func init() {
@@ -64,8 +60,5 @@
 		RequireHandshake = RequireHandshakeOn
 	case "off":
 		RequireHandshake = RequireHandshakeOff
-	case "hybrid":
-		// Will be removed after the 1.17 release.
-		RequireHandshake = RequireHandshakeHybrid
 	}
 }