Up aruba timeout for simplecov overhead

MSP-11647

Doubling the timeout is arbitrary, but travis-ci's limit for no output
is 10 minutes, so it can't go much higher.

Author: limhoff-r7

features/support/hooks.rb

@@ -1,7 +1,7 @@
 Before do
   set_env('MSF_DATBASE_CONFIG', Rails.configuration.paths['config/database'].existent.first)
   set_env('RAILS_ENV', 'test')
-  @aruba_timeout_seconds = 4.minutes
+  @aruba_timeout_seconds = 8.minutes
 end
 
 Before do |scenario|