VOL-4925 - Build and release components.

go.mod
go.sum
------
  o Bump voltha-protos version string to 5.3.8.

makefiles/include.mk
makefiles/lint/include.mk
makefiles/lint/makefile.mk
makefiles/lint/shell.mk
makefiles/lint/yaml/yamllint.mk
-------------------------------
  o Added support for make library lint targets.
  o Move help target text from Makefile into makefiles/help.mk.

Change-Id: I6e54f47cb38c8946330bb3d40d2354a54a7c9a0c
diff --git a/makefiles/lint/yaml/todo b/makefiles/lint/yaml/todo
new file mode 100644
index 0000000..8a9367b
--- /dev/null
+++ b/makefiles/lint/yaml/todo
@@ -0,0 +1,39 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# -----------------------------------------------------------------------
+
+##-------------------##
+##---]  GLOBALS  [---##
+##-------------------##
+env-clean = /usr/bin/env --ignore-environment
+xargs-n1      := xargs -0 -t -n1 --no-run-if-empty
+
+yamllint      := $(env-clean) $(YAMLLINT)
+yamllint-args := -c .yamllint
+
+##-------------------##
+##---]  TARGETS  [---##
+##-------------------##
+lint : lint-yaml
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+lint-yaml:
+	$(HIDE)$(env-clean) find . -name '*.yaml' -type f -print0 \
+	    | $(xargs-n1) $(yamllint) $(yamllint-args)
+
+## -----------------------------------------------------------------------
+## -----------------------------------------------------------------------
+help:
+	@echo
+	@echo "USAGE: $(MAKE)"
+	@echo "  lint        perform syntax checks on source"
+	@echo "  test        perform syntax checks on source"
+	@echo "  pre-check   Verify tools and deps are available for testing"
+	@echo
+	@echo "[LINT]"
+	@echo "  lint-json   Syntax check .json sources"
+	@echo "  lint-yaml   Syntax check .yaml sources"
+	@echo
+# [EOF]