set RSpec focus to false on CI

Author: e2

Diff for: spec/spec_helper.rb

@@ -10,7 +10,7 @@
     mocks.verify_partial_doubles = true
   end
 
-  config.filter_run :focus
+  config.filter_run focus: ENV['CI'] != 'true'
   config.run_all_when_everything_filtered = true
 
   config.disable_monkey_patching!