Delete python bytecode before every test run
Delete python bytecode before every test run

Change-Id: Ib9f62857ea5c7375c47f1a72a941af306501d4fe
Closes-Bug: #1368661

openstack/solum,openstack/solum,devdattakulkarni/test-solum,devdattakulkarni/test-solum,stackforge/solum,stackforge/solum