CE: Add project download & project export audit event

This change adds audit events for
download of repository and export of
project.

doc/administration/audit_events.md

@@ -73,6 +73,8 @@ From there, you can see the following actions:
 - User was added to project and with which [permissions]
 - Permission changes of a user assigned to a project
 - User was removed from project
+- Project export was downloaded
+- Project repository was downloaded
 
 ### Instance events **(PREMIUM ONLY)**
 

lib/api/helpers.rb

@@ -544,5 +544,9 @@ module API
 
       params[:archived]
     end
+
+    def ip_address
+      env["action_dispatch.remote_ip"].to_s || request.ip
+    end
   end
 end

lib/api/helpers/runner.rb

@@ -25,7 +25,7 @@ module API
       end
 
       def get_runner_ip
-        { ip_address: env["action_dispatch.remote_ip"].to_s || request.ip }
+        { ip_address: ip_address }
       end
 
       def current_runner