Merge branch 'fix-missing-start-discussion-method-qa' into 'master'

[CE] port of fix for failing E2E test ee_add_batch_comments_in_merge_request_spec.rb

See merge request gitlab-org/gitlab-ce!24247

qa/qa/page/component/note.rb

@@ -32,9 +32,13 @@ module QA
           click_element :comment_button
         end
 
-        def reply_to_discussion(reply_text)
+        def type_reply_to_discussion(reply_text)
           all_elements(:discussion_reply).last.click
           fill_element :reply_input, reply_text
+        end
+
+        def reply_to_discussion(reply_text)
+          type_reply_to_discussion(reply_text)
           click_element :reply_comment_button
         end