[ClusterLabs] Reusing resource set in multiple constraints

[Andrei Borzenkov]

Is it possible to have single definition of resource set that is later
references in order and location constraints? All syntax in
documentation or crmsh presumes inline set definition in location or
order statement.

In this particular case there will be set of filesystems that need to be
colocated and ordered against other resources; these filesystems will be
extended over time and I would like to add new definition in just one place.