MNT Fix broken behat tests (#347)

Author: GuySartorelli

tests/behat/features/manage-campaigns.feature

@@ -5,7 +5,7 @@ Feature: Manage campaigns
   So that I can control bulk publication of content efficiently
 
   Background:
-    Given a "campaign" "Test Campaign" with "Description"="this is a test"
+    Given a "ChangeSet" "Test Campaign" with "Description"="this is a test"
       And the "group" "EDITOR" has permissions "Access to 'Pages' section" and "Access to 'Campaigns' section" and "Access to 'Files' section" and "FILE_EDIT_ALL"
       And the "group" "CAMPAIGNS_EDITOR" has permissions "Access to 'Campaigns' section"
 

tests/behat/features/populate-campaigns.feature

@@ -7,7 +7,7 @@ Feature: Populate campaigns
   Background:
     Given a "page" "About Us"
     And a "image" "assets/folder1/file2.jpg"
-    And a "Campaign" "Empty Campaign"
+    And a "ChangeSet" "Empty Campaign"
     And a campaign "Full Campaign" with changes "image"="assets/folder1/file2.jpg" and "page"="About Us"
     And the "group" "EDITOR" has permissions "Access to 'Pages' section" and "Access to 'Campaigns' section" and "Access to 'Files' section" and "FILE_EDIT_ALL"
     And I am logged in as a member of "EDITOR" group