Fix mount config unit test failures
Fix mount config unit test failures

Because setStorageId now instantiates storages, they might throw
exceptions if arguments are missing.

This fixes the unit test to not throw exceptions and have their default
config arguments set.

Ardinis/server,bluelml/core,nextcloud/server,michaelletzgus/nextcloud-server,pmattern/server,endsguy/server,cernbox/core,whitekiba/server,whitekiba/server,andreas-p/nextcloud-server,IljaN/core,endsguy/server,Ardinis/server,pollopolea/core,endsguy/server,andreas-p/nextcloud-server,pixelipo/server,pixelipo/server,owncloud/core,IljaN/core,whitekiba/server,IljaN/core,Ardinis/server,michaelletzgus/nextcloud-server,lrytz/core,jbicha/server,cernbox/core,pmattern/server,cernbox/core,pixelipo/server,owncloud/core,xx621998xx/server,nextcloud/server,endsguy/server,pmattern/server,jbicha/server,lrytz/core,lrytz/core,owncloud/core,pollopolea/core,sharidas/core,bluelml/core,bluelml/core,lrytz/core,jbicha/server,andreas-p/nextcloud-server,sharidas/core,phil-davis/core,pixelipo/server,sharidas/core,andreas-p/nextcloud-server,bluelml/core,Ardinis/server,pmattern/server,xx621998xx/server,endsguy/server,whitekiba/server,xx621998xx/server,bluelml/core,jbicha/server,pmattern/server,IljaN/core,xx621998xx/server,owncloud/core,cernbox/core,cernbox/core,pixelipo/server,sharidas/core,pollopolea/core,xx621998xx/server,Ardinis/server,michaelletzgus/nextcloud-server,nextcloud/server,whitekiba/server,sharidas/core,pollopolea/core,jbicha/server,nextcloud/server,IljaN/core,michaelletzgus/nextcloud-server,lrytz/core,pollopolea/core,owncloud/core,andreas-p/nextcloud-server