Rename method according to new role name

qa/qa/factory/resource/branch.rb

@@ -64,13 +64,13 @@ module QA
               page.select_branch(branch_name)
 
               if allow_to_push
-                page.allow_devs_and_masters_to_push
+                page.allow_devs_and_maintainers_to_push
               else
                 page.allow_no_one_to_push
               end
 
               if allow_to_merge
-                page.allow_devs_and_masters_to_merge
+                page.allow_devs_and_maintainers_to_merge
               else
                 page.allow_no_one_to_merge
               end

qa/qa/page/project/settings/protected_branches.rb

@@ -40,7 +40,7 @@ module QA
             click_allow(:push, 'No one')
           end
 
-          def allow_devs_and_masters_to_push
+          def allow_devs_and_maintainers_to_push
             click_allow(:push, 'Developers + Maintainers')
           end
 
@@ -48,7 +48,7 @@ module QA
             click_allow(:merge, 'No one')
           end
 
-          def allow_devs_and_masters_to_merge
+          def allow_devs_and_maintainers_to_merge
             click_allow(:merge, 'Developers + Maintainers')
           end