Update repository to use repo:onf-make/makefiles

.gitmodules
Makefile
config.mk -> lf/config.mk
lf/include.mk
lf/local/include.mk
lf/onf-make
makefiles/README.md
-------------------------
  o Initial staging to remove per-repository makefiles/ directory.
  o Add repo:onf-make as a git submodule.
  o lf/include.mk is central access for loading all library logic.
  o lf/local/ replaces $(sandbox-root)/makefiles.

*.groovy, *.sh, *.yaml
----------------------
  o Include source edits to force pipeline to rebuild.
  o Added SPDX copyright notice tokens.

Change-Id: Ia6b95880e720956d01af2c5966f7ae5d0f4c13b1
diff --git a/Makefile b/Makefile
index 489303c..b064411 100644
--- a/Makefile
+++ b/Makefile
@@ -25,8 +25,9 @@
 ##--------------------##
 ##---]  INCLUDES  [---##
 ##--------------------##
-include config.mk
-include makefiles/include.mk
+# include config.mk
+include lf/include.mk
+
 ONF_MAKEDIR ?= $(error ONF_MAKEDIR= is required)
 
 # [TODO]