SolrCloud 4.1 - change config set for a collection?

[Shawn Heisey]

Is it possible to issue a command through the collections API that will 
assign a new config set (already stored in zookeeper) to an existing 
collection?

Related - because such changes would require a reload, is there a RELOAD 
action on the collection API that finds all the cores for that 
collection and reloads them?

The SolrCloud wiki page doesn't have a reference for the action 
parameter and the parameter list is almost guaranteed to be incomplete.

I thought I remembered seeing a Jira issue that would automatically 
reload collections when making changes to the associated config set.

Thanks,
Shawn