Updates for the pre-commit hook

.pre-commit-config.yaml
-----------------------
  o Add more hooks

bin/setup.sh
makefiles/commands/kail/godownloader.sh
---------------------------------------
  o Shellcheck cleanups

install/README.md
-----------------
  o Add a project copyright notice.

makefiles/.../*.mk
------------------
  o Update copyright notice.
  o Replace legacy var $(ONF_MAKEDIR) with onf-mk-dir=

makefiles/virtualenv/include.mk
-------------------------------
  o Fixed a small problem with targets clean & sterile.
  o Clean target should remove

Change-Id: If624531f4d38aaacc200d3c49aee2c3804122ffb
Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
diff --git a/makefiles/lint/doc8/doc8.mk b/makefiles/lint/doc8/doc8.mk
index 4baf09f..b179b52 100644
--- a/makefiles/lint/doc8/doc8.mk
+++ b/makefiles/lint/doc8/doc8.mk
@@ -38,7 +38,7 @@
 # doc8 config as command line args so local makefiles to use --config
 # -----------------------------------------------------------------------
 ifdef USE_DOC8_INI
-  lint-doc8-args += --config $(ONF_MAKEDIR)/lint/doc8/doc8.ini
+  lint-doc8-args += --config $(onf-mk-dir)/lint/doc8/doc8.ini
 endif
 
 ## -----------------------------------------------------------------------