[VOL-5222] - Upgrade golang version for VOLTHA jobs

.gitreview
VERSION
----------
  o post-release tasks.  Repository tagged and banched.
  o Add missing newlines at EOF.
  o go.mod syntax does not allow *-dev suffix so update
    master VERSION from v5.5.0-dev to v5.5.0.  Community
    can introduce a dev version when needed.

go/*.pb.og
vendor/*.go
-----------
  o invoke make mod-update to regenerate go.sum and friends.
  o lint clenaups: find . -name '*.go' -print | xargs -n1 gofmt -s -e -w

Change-Id: I3da80c0ce5600679b388e309bfa4702f1ec3212b
diff --git a/Makefile b/Makefile
index e1c4b16..7ed7d80 100755
--- a/Makefile
+++ b/Makefile
@@ -204,6 +204,8 @@
 	$(call banner-enter,target $@)
 	@echo "** Creating *.go.pb files"
 
+	$(if $(LOCAL_FIX_PERMS),chmod -R o+w $(PROTO_GO_DEST_DIR))
+
 	${PROTOC_SH} $(quote-double)\
 	  set -e -o pipefail; \
 	  for x in ${PROTO_FILES}; do \
@@ -212,6 +214,8 @@
 	  done\
 	  $(quote-double)
 
+	$(if $(LOCAL_FIX_PERMS),chmod -R o-w $(PROTO_GO_DEST_DIR))
+
 	$(call banner-leave,target $@)
 
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