[VOL-5064] - Build and deploy voltha-system-tests

makefiles/
----------
  o Copy in latest library makefiles from repo:onf-make

config.mk
makefiles/lint
--------------
  o Support more lint targets

makefiles/virtualenv.mk
-----------------------
  o Update to use library logic.
  o Install/maintain .venv/ VS vst_venv.
  o Proper dependency driven create when needed VS always install.
  o Also support replacing inlined venv logic with library makefile logs.

makefiles/commands/kail.mk
--------------------------
  o mkdir -p for interactive use when WORKSPACE= is set.

Makefile
--------
  o Inline comment delimiters and help targets to improve readabilty.
  o Call macro banner-enter/banner-leave to hilight target output.
  o Change targets clean and help into double-colon rules so they
    are included when library targets are processed.
  o Update include $(MAKEDIR) imports, library makefiles are able to infer paths
    and define MAKDIR=, ONF_MAKEDIR=.
  o Define helper macro run-robot-test= allowing copy & paste robot command
    line to be refactored and reduced.
  o Define local target 'venv-install' allowing installation of the virtualenv
    followed by patching so a newer interpreter can be used locally for testing.
  o Shell command separator: replace ';' with '&&' to improve error detection.
  o target=gendocs: Split run-on command line into independent steps, activate
    script only applies to the for loop invoking tests.

Change-Id: Idc8efd89f36b9f4954d9394a6524e07aa2ea5531
diff --git a/makefiles/lint/markdown/urls b/makefiles/lint/markdown/urls
new file mode 100644
index 0000000..86ff76b
--- /dev/null
+++ b/makefiles/lint/markdown/urls
@@ -0,0 +1,6 @@
+# -*- makefile -*-
+
+# Consumer: repo:voltha-docs
+https://github.com/markdownlint/markdownlint
+
+# [EOF]