slapos-sr-testing: Enfroce python3 only for caddy-frontend

software/slapos-sr-testing/software-py3.cfg

@@ -13,6 +13,7 @@ extra-eggs +=
 [template]
 extra =
 # The following list is for SR whose buildout runs only with Python 3.
+  caddy-frontend ${slapos.test.caddy-frontend-setup:setup}
   erp5testnode ${slapos.test.erp5testnode-setup:setup}
   galene ${slapos.test.galene-setup:setup}
   headless-chromium ${slapos.test.headless-chromium-setup:setup}

software/slapos-sr-testing/software.cfg

@@ -359,7 +359,6 @@ extra =
 #          You should not add more lines here.
   backupserver ${slapos.test.backupserver-setup:setup}
   beremiz-ide ${slapos.test.beremiz-ide-setup:setup}
-  caddy-frontend ${slapos.test.caddy-frontend-setup:setup}
   caucase ${slapos.test.caucase-setup:setup}
   cloudooo ${slapos.test.cloudooo-setup:setup}
   dream ${slapos.test.dream-setup:setup}