Description
Could have an admin zk handler and one per core?
An admin zk handler would allow you to access it without specifying an existing core if done right.
One per core lets you do things like:
post solrconfig.xml to localhost:8983:/solr/collection1/zkhandler
Then we look up what config set we linked to and overwrite the solrconfig.xml.
You can already GET config files through another handler, so at the moment I'd avoid duplicating that.
Could imagine adding commands over time though.