[VOL-5321] - Add repo:onf-make as a git submodule.

Makefile
lf/transition.mk
----------------
  o Add bridge logic to conditionally load legacy makefiles or repo:onf-make.
  o transition.mk allows logic to gradually be replaced.
  o makefiles/ directory can eventually be removed after all
    dependencies on local makefile logic have been removed.

makefiles/
----------
  o Replace make var(s) ONF_MAKEDIR= and ONF_MAKE= with var legacy-mk=.

makefiles/commands/include.mk
makefiles/commands/kail/godownloader.sh
---------------------------------------
  o Replace loading legacy kail logic with library makefiles.
  o Git submodule scripts contain linting cleanup for scripts.

Signed-off-by: Joey Armstrong <jarmstrong@linuxfoundation.org>
Change-Id: I152251039fc3b330ed1a6729922e465c53d00879
diff --git a/makefiles/targets/include.mk b/makefiles/targets/include.mk
index 2e534ea..7d2c99e 100644
--- a/makefiles/targets/include.mk
+++ b/makefiles/targets/include.mk
@@ -26,10 +26,10 @@
 ##-------------------##
 ##---]  TARGETS  [---##
 ##-------------------##
-include $(ONF_MAKEDIR)/targets/clean.mk
-include $(ONF_MAKEDIR)/targets/check.mk
-include $(ONF_MAKEDIR)/targets/sterile.mk
-include $(ONF_MAKEDIR)/targets/test/include.mk
+include $(legacy-mk)/targets/clean.mk
+include $(legacy-mk)/targets/check.mk
+include $(legacy-mk)/targets/sterile.mk
+include $(legacy-mk)/targets/test/include.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/targets/test/include.mk b/makefiles/targets/test/include.mk
index 85b8648..30a7e38 100644
--- a/makefiles/targets/test/include.mk
+++ b/makefiles/targets/test/include.mk
@@ -24,7 +24,7 @@
 $(if $(DEBUG),$(warning ENTER))
 
 # Special snowflake: repository-dependent test target
--include $(ONF_MAKEDIR)/targets/test/$(--repo-name--).mk
+-include $(legacy-mk)/targets/test/$(--repo-name--).mk
 
 $(if $(DEBUG),$(warning LEAVE))