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/bin/setup.sh b/bin/setup.sh
index 600e995..d72ddae 100755
--- a/bin/setup.sh
+++ b/bin/setup.sh
@@ -33,7 +33,8 @@
 ## -----------------------------------------------------------------------
 function program_paths()
 {
-    declare -g pgm="$(readlink --canonicalize-existing "$0")"
+    declare -g pgm
+    pgm="$(readlink --canonicalize-existing "$0")"
     declare -g pgmbin="${pgm%/*}"
     declare -g pgmroot="${pgmbin%/*}"
     declare -g pgmname="${pgm%%*/}"
@@ -41,6 +42,8 @@
     readonly pgm
     readonly pgmbin
     readonly pgmroot
+
+    # shellcheck disable=SC2034
     readonly pgmname
 
     return