Add unit test for RailsMaxInstancesPerApp.
Add unit test for RailsMaxInstancesPerApp.

erikogan/passenger,antek-drzewiecki/passenger,cgvarela/passenger,antek-drzewiecki/passenger,phusion/passenger,erikogan/passenger,fabiokung/passenger-debian,clemensg/passenger,kewaunited/passenger,clemensg/passenger,fabiokung/passenger-debian,jawj/passenger,kewaunited/passenger,cgvarela/passenger,openSUSE/passenger,kewaunited/passenger,clemensg/passenger,pkmiec/passenger,jawj/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,gravitystorm/passenger,bf4/passenger,bf4/passenger,phusion/passenger,clemensg/passenger,bf4/passenger,jawj/passenger,gravitystorm/passenger,bf4/passenger,pkmiec/passenger,erikogan/passenger,kewaunited/passenger,bf4/passenger,kewaunited/passenger,cgvarela/passenger,bf4/passenger,openSUSE/passenger,gravitystorm/passenger,pkmiec/passenger,erikogan/passenger,kewaunited/passenger,erikogan/passenger,cgvarela/passenger,clemensg/passenger,phusion/passenger,jawj/passenger,openSUSE/passenger,jawj/passenger,phusion/passenger,phusion/passenger,cgvarela/passenger,openSUSE/passenger,gravitystorm/passenger,erikogan/passenger,phusion/passenger,gravitystorm/passenger,phusion/passenger,fabiokung/passenger-debian,pkmiec/passenger,fabiokung/passenger-debian,pkmiec/passenger,jawj/passenger,pkmiec/passenger,antek-drzewiecki/passenger,bf4/passenger,openSUSE/passenger,cgvarela/passenger,antek-drzewiecki/passenger,clemensg/passenger,phusion/passenger,cgvarela/passenger,fabiokung/passenger-debian,clemensg/passenger,antek-drzewiecki/passenger,pkmiec/passenger,fabiokung/passenger-debian,cgvarela/passenger,kewaunited/passenger,antek-drzewiecki/passenger,openSUSE/passenger,kewaunited/passenger,jawj/passenger,clemensg/passenger,gravitystorm/passenger