Fix e2e test failures on staging

Move UI related code out of before(:all) and use admin to log in
for changing repository size

qa/qa/specs/features/ee/browser_ui/1_manage/group/group_audit_logs_1_spec.rb

@@ -14,8 +14,7 @@ module QA
 
     describe 'Group audit logs' do
       before(:all) do
-        sign_in
-        @group = Resource::Group.fabricate_via_browser_ui! do |resource|
+        @group = Resource::Group.fabricate_via_api! do |resource|
           resource.path = "test-group-#{SecureRandom.hex(8)}"
         end
       end
@@ -31,7 +30,7 @@ module QA
       context 'Add group' do
         before do
           sign_in
-          @group.visit!
+          Resource::Group.fabricate_via_browser_ui!.visit!
           Page::Group::Menu.perform(&:click_group_general_settings_item)
         end
 
@@ -40,7 +39,7 @@ module QA
 
       context 'Change repository size limit' do
         before do
-          sign_in
+          sign_in(as_admin: true)
           @group.visit!
           Page::Group::Menu.perform(&:click_group_general_settings_item)
           Page::Group::Settings::General.perform do |settings|
@@ -109,10 +108,12 @@ module QA
       end
     end
 
-    def sign_in
-      unless Page::Main::Menu.perform { |p| p.has_personal_area?(wait: 0) }
+    def sign_in(as_admin: false)
+      unless Page::Main::Menu.perform(&:signed_in?)
         Runtime::Browser.visit(:gitlab, Page::Main::Login)
-        Page::Main::Login.perform(&:sign_in_using_credentials)
+        Page::Main::Login.perform do |login|
+          as_admin ? login.sign_in_using_admin_credentials : login.sign_in_using_credentials
+        end
       end
     end
   end