[SEBA-450] (part 1)

Refactoring, python3 compat, and tox tests on:

- xosconfig
- xosgenx
- xosutil

Eliminate use of yaml.load() which is unsafe, switch to yaml.safe_load()

More diagnostics during database migration

Change-Id: I0fae5782fca401603a7c4e4ec2b9269ad24bda97
diff --git a/lib/xos-genx/MANIFEST.in b/lib/xos-genx/MANIFEST.in
index a058bb4..d530ad3 100644
--- a/lib/xos-genx/MANIFEST.in
+++ b/lib/xos-genx/MANIFEST.in
@@ -1,3 +1,5 @@
-include xosgenx/targets/*
+include requirements.txt
+include xosgenx/VERSION
 include xosgenx/checkers/*
 include xosgenx/jinja2_extensions/*
+include xosgenx/targets/*