Set proper rails generator defaults
Set proper rails generator defaults

To avoid the requirement to provide additional flags while using the
builtin rails generators I have added some flags to the application
configuration. Now the generator always uses rspec, slim and
factory_girl by default, and test_unit as a fallback if any generator
doesn't support rspec.

Signed-off-by: Thomas Boerger <87bd6415ec5426d959b8175b6715278e7bff644c@suse.de>

krishnak9/Portus,angry-tony/Portus-20170827,SUSE/Portus,krishnak9/Portus,angry-tony/Portus-20170827,mssola/Portus,mssola/Portus,jloehel/Portus,angry-tony/Portus-20170827,angry-tony/Portus-20170827,SUSE/Portus,krishnak9/Portus,jloehel/Portus,mssola/Portus,jloehel/Portus,mssola/Portus,SUSE/Portus,krishnak9/Portus,SUSE/Portus