FTTH-50632 [log modification of controller and vpagent  package]

Change-Id: Ib46bd1dbd7ba759a1b25f22b377dcefa3a289919
diff --git a/internal/pkg/vpagent/connection.go b/internal/pkg/vpagent/connection.go
index e90eab1..21aa569 100644
--- a/internal/pkg/vpagent/connection.go
+++ b/internal/pkg/vpagent/connection.go
@@ -63,7 +63,7 @@
 				}
 			}
 		}
-		logger.Warnw(ctx, "Failed to connect to voltha",
+		logger.Fatalw(ctx, "Failed to connect to voltha",
 			log.Fields{
 				"VolthaApiEndPoint": vpa.VolthaAPIEndPoint,
 				"error":             err.Error(),