Fix test to use proper workflow prefix
Fix test to use proper workflow prefix

Test failed as prefix is now checked in OpenXPKI::Workflow::Config

stefanomarty/openxpki,openxpki/openxpki,oliwel/openxpki,oliwel/openxpki,stefanomarty/openxpki,openxpki/openxpki,oliwel/openxpki,stefanomarty/openxpki,stefanomarty/openxpki,oliwel/openxpki,oliwel/openxpki,oliwel/openxpki,stefanomarty/openxpki,openxpki/openxpki,openxpki/openxpki,stefanomarty/openxpki