use raw file write for cuke

the write_file method from aruba
was not working properly anymore, replaced it
with a raw ruby file write

features/step_definitions/project.rb

@@ -6,7 +6,7 @@ end
 
 Given /^the project "database.yml" exists with:$/ do |file_content|
   Metasploit::Framework::Database::Cucumber.backup_project_configurations
-  write_file(Metasploit::Framework::Database::Cucumber.project_configurations_path, file_content)
+  File.open(Metasploit::Framework::Database::Cucumber.project_configurations_path, 'wb') { |file| file.write(file_content) }
 end
 
 After do