software/beremiz-runtime: use IPv4 of the partition by default

Status Job ID Name Coverage
  External
passed Cloudooo.UnitTest-Master

00:17:40

passed SlapOS.Eggs.UnitTest-Master.Python2

00:35:05

passed SlapOS.Eggs.UnitTest-Master.Python3

00:39:07

passed SlapOS.Eggs.UnitTest-Master.Python3Next

00:42:12