[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-util/.gitignore b/lib/xos-util/.gitignore
index 7fa3589..02a3a55 100644
--- a/lib/xos-util/.gitignore
+++ b/lib/xos-util/.gitignore
@@ -1,6 +1 @@
-build
-dist
-XosUtil.egg-info
-.coverage
-coverage.xml
-cover
\ No newline at end of file
+tests/test_version.py