Update db_base to for None where clause

updated the db_base to take into account the case where filter values is not supplied
For merge with latest version of repo
Merge branch 'master' of https://github.com/Phoenix1708/OpenAcademy_OpenStack_Flyway

Conflicts:
flyway/etc/flyway.conf
flyway/flow/flow.py
Bad commit again.

Finished off Instance migration task and fixed 409 conflict bugs in image task
Updated Instance and image Database READ to return more than one tuple...
Merge branch master of https://github.com/Phoenix1708/OpenAcademy_OpenStack_Flyway

Conflicts:
flyway/flow/flavortask.py
flyway/flow/imagetask.py
flyway/flow/update_projects_quotas_task.py
flyway/utils/db_base.py
flyway/utils/db_handlers/images.py