software/kvm: fix TestDiskDevicePathWipeDiskOndestroy test

Fixes dbd19730
6 jobs for feat/erp5-random-activity-priority in 0 seconds (queued for 1 second)
Status Job ID Name Coverage
  External
failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

01:52:28

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

05:35:25

passed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

06:33:57

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

12:17:42

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3