Update configs from debug to logger

Author: JoaoCarAlmSilva

features/config.yml.example

@@ -1,4 +1,4 @@
-debug: false
+logger: nil
 
 # maximum wait for a response to any API request (secs)
 timeout_req: 60

features/step_definitions/common_steps.rb

@@ -4,7 +4,7 @@
   @api = BigBlueButton::BigBlueButtonApi.new(@config_server['url'],
                                              @config_server['secret'],
                                              @config_server['version'].to_s,
-                                             @config['debug'])
+                                             @config['logger'])
   @api.timeout = @config['timeout_req']
 end