[test] pull yapps from Logilab's github
Fixes a couple of failures, pull request is almost a year old
(https://github.com/smurfix/yapps/pull/2).
sync_schema_props_perms('state_of')
sync_schema_props_perms('transition_of')
sync_schema_props_perms('State')
sync_schema_props_perms('BaseTransition')
sync_schema_props_perms('Transition')
sync_schema_props_perms('WorkflowTransition')