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/python.mk b/makefiles/lint/python.mk
index a3d651c..d3fe4fd 100644
--- a/makefiles/lint/python.mk
+++ b/makefiles/lint/python.mk
@@ -1,6 +1,6 @@
 # -*- 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.
@@ -38,14 +38,16 @@
 endif
 
 ## -----------------------------------------------------------------------
+## Intent: Perform a lint check on makefile sources
 ## -----------------------------------------------------------------------
 lint-python:
 	$(HIDE)$(env-clean) $(python-check-find) \
 	    | $(xargs-n1) $(python-check) $(python-check-args)
 
 ## -----------------------------------------------------------------------
+## Intent: Display command help
 ## -----------------------------------------------------------------------
-help ::
-	@echo '  lint-python                   Syntax check python sources'
+help-summary ::
+	@echo '  lint-python         Syntax check python sources (*.py)'
 
 # [EOF]