[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-config/.gitignore b/lib/xos-config/.gitignore
index 10432e2..a04aaf4 100644
--- a/lib/xos-config/.gitignore
+++ b/lib/xos-config/.gitignore
@@ -1,7 +1,2 @@
-.noseids
-build
-XosConfig.egg-info
-dist
-.coverage
-coverage.xml
-cover
\ No newline at end of file
+# setup.py copies this, don't commit it
+xosconfig/VERSION