VOL-4836: VOLTHA release prep.
Makefile
--------
o Update copyright notice.
o include a few library makefiles for displaying help, etc.
o Added target sterile to make clean + remove venv.
o Replace inlined rm -fr, rm -f with make builtin $(RM) && $(RM) -r
tox.ini
-------
o Add more interpreter versions to envlist so python 3.10.x can be used.
Change-Id: Ideb7e30ff703dff18b707226a4821455f5b1f261
diff --git a/VERSION b/VERSION
index 025c1ae..57f3eee 100755
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.3.7
+5.3.7-dev1