Turn off --warnings

This is to reduce the very verbose set of warnings saying this:

/Users/pivotal/.gem/ruby/2.1.2/gems/rspec-rails-3.0.1/lib/rspec/rails/adapters.rb:124:
warning: instance variable @example not initialized
(100 times+ per rspec run)

This seems to be a bug that's being worked on with rspec in conjunction with rails 4.

Signed-off-by: Ryan Tang <ryantang@pivotallabs.com>
Add basic auth to Krafa

[#73480968]

Signed-off-by: Ryan Tang <ryantang@pivotallabs.com>