Return has_network_connection driver extension

It was mistakenly removed in f6f0064

Author: p0deje

rb/lib/selenium/webdriver/common.rb

@@ -55,7 +55,7 @@
 require 'selenium/webdriver/common/driver_extensions/has_touch_screen'
 require 'selenium/webdriver/common/driver_extensions/has_remote_status'
 require 'selenium/webdriver/common/driver_extensions/has_network_conditions'
-require 'selenium/webdriver/common/driver_extensions/has_network_conditions'
+require 'selenium/webdriver/common/driver_extensions/has_network_connection'
 require 'selenium/webdriver/common/driver_extensions/has_permissions'
 require 'selenium/webdriver/common/driver_extensions/has_debugger'
 require 'selenium/webdriver/common/driver_extensions/uploads_files'