Fix TestConnectionUtils to py3x compatibility

Tests in TestConnectionUtils class depends on database and DB connector,
so the simplest way to run them with python 3.X is to use same database
and connector for the both python versions. PostgreSQL and psycopg2 are
looks good for this.

Replaced ``mysql`` to ``postgresql`` in TestConnectionUtils.

Change-Id: Icb1d6324b58feed515e4eb885715cbf2195768cf
Merge "Fix TestConnectionUtils to py3x compatibility"
Updated from global requirements

Change-Id: I976f8b8a7b3d31c7046ed53f6564c58af408b1b2
Fix python3.x scoping issues with removed 'uee' variable

In python3.x the 'uee' variable will be removed from the
scope after the except block exits (if it ever is entered)
so we need to use a different variable name to ensure that
it will not be deleted so we can use it later.

Change-Id: Ia86a2bd1a46e57eaf47704eadc991fd0c9b08661
Merge "Updated from global requirements"