playbook: add flock mechanism to vifib and ors playbooks

both playbooks need to run frequently on ORS which caused conflicts
Status Job ID Name Coverage
  External
running ERP5.StandaloneDeploymentScriptTest-Debian.Bulleseye.JEROME

18398:11:34

running ERP5.StandaloneDeploymentScriptTest-Debian.Stretch

18398:11:42

running SlapOS-Master.StandaloneDeploymentScriptTest-Debian.Stretch

18398:10:43

running Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

18398:11:45