[BrowserTest] WIP adding cases to test other options under Page Settings to options.feature

Also:
* Fixed a typo in options_steps.rb
* Disabled Metrics/ClassLength Rubocop cop.

Change-Id: I7128ba8f7ebf9c63aef9399a9cdf24831e1a2d38
Merge "[BrowserTest] WIP adding cases to test other options under Page Settings to options.feature"