[VOL-5010] - Clone unit tests to run on a v2.12 branch

makefiles/consts.mk
makefiles/virtualenv.mk
-----------------------
  o Copy in latest library makefiles from repo:onf-make

global-jjb
packer/common-packer
--------------------
  o Upgrade LinuxFoundation submodules to the latest version.
  o global-jjb           : from=0.53.3 to=0.86.7
  o packaer/common-packer: from=0.1.0~22 to=0.12.1

.gitignore
makefiles/include.mk
makefiles/git/
makefiles/jjb/
--------------
  o Added convenience make targets to view submodule versions.
  o JJB target:jjb-gen added to prototype local pipeline edits.
  o Logic is conditional, library will only load when targets are requested.

jjb/voltha-test/voltha-certification/
jjb/voltha-test/voltha-certification/README
jjb/voltha-test/voltha-certification/master.yaml
------------------------------------------------
  o Create pseudo-branches within voltha testing so we can
  o 'branch' (simple directory copy) at release time VS
  o having to find and clone individual test suites from last release.

Change-Id: I3e0096d3326e76b3faa896d73183f9d28e946d06
diff --git a/makefiles/consts.mk b/makefiles/consts.mk
index d6f71e8..8961b3a 100644
--- a/makefiles/consts.mk
+++ b/makefiles/consts.mk
@@ -17,6 +17,7 @@
 # SPDX-FileCopyrightText: 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
 # SPDX-License-Identifier: Apache-2.0
 # -----------------------------------------------------------------------
+# https://gerrit.opencord.org/plugins/gitiles/onf-make
 # ONF.makefile.version = 1.0
 # -----------------------------------------------------------------------
 
@@ -26,17 +27,25 @@
 export dot          :=.
 export null         :=#
 export space        := $(null) $(null)
-export quote-single := $(null)"$(null)#"
-export quote-double := $(null)'$(null)#'
+export quote-single := $(null)'$(null)#'
+export quote-double := $(null)"$(null)#"
 
 # [DEBUG] make {target} HIDE=
-HIDE        ?= @
+HIDE           ?= @
 
 env-clean      ?= /usr/bin/env --ignore-environment
 xargs-n1       := xargs -0 -t -n1 --no-run-if-empty
 xargs-n1-clean := $(env-clean) $(xargs-n1)
 
 ## -----------------------------------------------------------------------
+## Intent: NOP command for targets whose dependencies do all heavy lifting
+## -----------------------------------------------------------------------
+## usage: foo bar tans
+## <tab>$(nop-command)
+## -----------------------------------------------------------------------
+nop-cmd        := :
+
+## -----------------------------------------------------------------------
 ## Default shell:
 ##   o set -e            enable error checking
 ##   o set -u            report undefined errors