[VOL-5257] - Base build #2, pre-release version updates.

go.mod
go.sum
vendor/modules.txt
vendor/*
------------------
  o Update voltha-protos to v5.4.1
  o Update voltha-lib-go to v7.5.3
  o Run make mod-update

Change-Id: Idff3929052a367321b756d81f5cafe2c93d1d811
diff --git a/.gitreview b/.gitreview
index a5311ab..a81beda 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,4 +2,4 @@
 host=gerrit.opencord.org
 port=29418
 project=voltha-openolt-adapter.git
-defaultremote=origin
+defaultremote=master