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/python.mk b/makefiles/lint/yaml/python.mk
new file mode 100644
index 0000000..868d9b7
--- /dev/null
+++ b/makefiles/lint/yaml/python.mk
@@ -0,0 +1,41 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-FileCopyrightText: 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+YAML_FILES ?= $(error YAML_FILES= is required)
+
+lint-yaml-dep = $(addsuffix ^lint-yaml,$(YAML_FILES))
+lint-yaml-src = $(firstword $(subst ^,$(space),$(1)))
+
+##-------------------##
+##---]  TARGETS  [---##
+##-------------------##
+.PHONY : lint-yaml
+lint   : lint-yaml
+
+lint-yaml: $(venv-activate)
+lint-yaml: $(lint-yaml-dep)
+
+$(lint-yaml-dep):
+	$(vst-env) && yamllint -s $(call lint-yaml-src,$@)
+
+help::
+	@echo "  lint-yaml            Syntax check yaml sources"
+
+# [EOF]