Hi, I'm looking for a way to show just location constraints, if they exist, for 
a cluster.  I'm looking for the same data shown in the output of `pcs config` 
under the "Location Constraints:" header, but without all the rest, so that I 
can write a script that checks if there are any set.

The situation is that sometimes people will perform a failover with `pcs 
resource move --master <resource>`, but then forget to follow it up with `pcs 
resource clear <resource>`, and then it causes unnecessary failbacks later.  As 
we never want to have any particular node in the cluster preferred for this 
resource, I'd like to write a script that can automatically check for any 
location constraints being set and either alert or clear it automatically.

Thank you for any advice!
-- 
Casey
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