While helping Dave Maloney port the changes from lib/msfenv.rb to
config/boot.rb for the Gemfile.local support, I failed to notice that
root was only defined in the unless block when it is needed no matter
what.
MSP-9606
In order to support Metasploit::Credential correctly,
metasploit-framework needs to support Metasploit::Concern, which does
all its magic using a Rails::Engine initializer, so the easiest path is
to make metasploit-framework be able to use Rails::Engines. To make
Rails::Engine use Rails::Engine, make a dummy Rails::Application
subclass so that all the initializers will be run when anything requires
msfenv.
Jon Hart
Luke Imhoff
David Maloney