default software_type is now 'default'

See merge request !1642
Status Job ID Name Coverage
  External
passed Cloudooo.UnitTest-Master

00:17:15

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:36:29

failed SlapOS.Eggs.UnitTest-Master.Python2

00:35:42

failed SlapOS.Eggs.UnitTest-Master.Python3

00:25:07