Allow activating integration tests with an environment variable.
Allow activating integration tests with an environment variable.

This simplifies automatic execution, where we do not want to touch test.ini

phihag/adhocracy,liqd/adhocracy,DanielNeugebauer/adhocracy,phihag/adhocracy,liqd/adhocracy,liqd/adhocracy,DanielNeugebauer/adhocracy,alkadis/vcv,phihag/adhocracy,SysTheron/adhocracy,DanielNeugebauer/adhocracy,SysTheron/adhocracy,DanielNeugebauer/adhocracy,SysTheron/adhocracy,alkadis/vcv,phihag/adhocracy,alkadis/vcv,liqd/adhocracy,phihag/adhocracy,alkadis/vcv,alkadis/vcv,DanielNeugebauer/adhocracy