[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/xos-genx-tests/test_swagger.py b/lib/xos-genx/xos-genx-tests/test_swagger.py
index 3af997e..1886a76 100644
--- a/lib/xos-genx/xos-genx-tests/test_swagger.py
+++ b/lib/xos-genx/xos-genx-tests/test_swagger.py
@@ -12,10 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
+from __future__ import absolute_import
 import unittest
-
-import yaml
 from xosgenx.generator import XOSProcessor, XOSProcessorArgs
 from helpers import OUTPUT_DIR