make help target cleanup

Makefile
makefiles/help/include.mk
makefiles/lint/include.mk
makefiles/lint/makefile.mk
makefiles/lint/.........mk
-------------------------
  o Implement topic help:: using 3 distinct targets.
  o help-summary - displays one-line topic help.
  o help-simple  - displays common topic help (lint, build, test)
  o help-verbose - exhaustive topic help for targets.
  o help (default) help-summary + help-simple (see {gerrit,lint}/help.mk)
  o Align all help text on string '[target]' from make cmd usage.
  o Restore JJB_VERSION ?= 2.8.0 in case of variant conflict with v4.1.0 in use.

makefiles/gerrit/help.mk
makefiles/gerrit/include.mk
---------------------------
  o Add gerrit command line convenience targets.
  o replication-status target shows health of gerrit-to-github mirror.

jjb/voltha-scale.yaml
---------------------
  o Lint cleanups, remove duplicate definitions.

Change-Id: I1c40fc0b5a61e3962e3481f0eae7266c5a6f2b2e
diff --git a/makefiles/lint/shell.mk b/makefiles/lint/shell.mk
index cadc084..b1a083b 100644
--- a/makefiles/lint/shell.mk
+++ b/makefiles/lint/shell.mk
@@ -1,6 +1,18 @@
 # -*- makefile -*-
 # -----------------------------------------------------------------------
-# Copyright 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2022-2023 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.
 # -----------------------------------------------------------------------
 
 ##-------------------##
@@ -28,6 +40,7 @@
 endif
 
 ## -----------------------------------------------------------------------
+## Intent: Perform a lint check on command line script sources
 ## -----------------------------------------------------------------------
 lint-shell:
 	$(shell-check) -V
@@ -36,8 +49,9 @@
 	    | $(xargs-n1) $(shell-check) $(shell-check-args)
 
 ## -----------------------------------------------------------------------
+## Intent: Display command help
 ## -----------------------------------------------------------------------
-help ::
-	@echo '  lint-shell                    Syntax check shell sources'
+help-summary ::
+	@echo '  lint-shell          Syntax check shell sources'
 
 # [EOF]