Merge remote-tracking branch 'upstream/staging/electro-release' into staging/electro-release

.ruby-version

@@ -1 +1 @@
-1.9.3-p484
+1.9.3-p547

config/application.rb

@@ -33,14 +33,25 @@ module Metasploit
     class Application < Rails::Application
       include Metasploit::Framework::CommonEngine
 
+      environment_database_yaml = ENV['MSF_DATABASE_CONFIG']
+
+      if environment_database_yaml
+        # DO NOT check if the path exists: if the environment variable is set, then the user meant to use this path
+        # and if it doesn't exist then an error should occur so the user knows the environment variable points to a
+        # non-existent file.
+        config.paths['config/database'] = environment_database_yaml
+      else
         user_config_root = Pathname.new(Msf::Config.get_config_root)
         user_database_yaml = user_config_root.join('database.yml')
 
+        # DO check if the path exists as in test environments there may be no config root, in which case the normal
+        # rails location, `config/database.yml`, should contain the database config.
         if user_database_yaml.exist?
           config.paths['config/database'] = [user_database_yaml.to_path]
         end
       end
     end
+  end
 end
 
 # Silence warnings about this defaulting to true