Add print only option to find-nodes
Add print only option to find-nodes

This allows just compiling a query and printing it out instead of
actually querying.

ccin2p3/puppet-puppetdbquery,unki/puppet-puppetdbquery,pyther/puppet-puppetdbquery,gcmalloc/puppet-puppetdbquery,dalen/puppet-puppetdbquery,danieldreier/puppet-puppetdbquery