(MAINT) Fix repl per break in SERVER-813
(MAINT) Fix repl per break in SERVER-813

This commit fixes the user_repl.clj, previously broken by changes
introduced in SERVER-813.  The primary change in the commit is to rename
`pool->vec` to `registered-instances` per the name change made as part
of the work on that ticket.  The commit also includes some web-routing
and puppet-admin sections missing from the sample repl configuration.

ahpook/puppet-server,puppetlabs/puppetserver,camlow325/puppet-server,ahpook/puppet-server,er0ck/puppetserver,rlinehan/puppetserver,fpringvaldsen/puppet-server,fpringvaldsen/puppet-server,cprice404/puppet-server,puppetlabs/puppet-server,camlow325/puppetserver,er0ck/puppetserver,rlinehan/puppetserver,cprice404/puppet-server,camlow325/puppetserver,waynr/puppet-server,camlow325/puppet-server,cprice404/puppetserver,waynr/puppet-server,shrug/puppet-server,rlinehan/puppet-server,waynr/puppetserver,kylog/puppet-server,rlinehan/puppet-server,kylog/puppet-server,shrug/puppet-server,rlinehan/puppetserver,cprice404/puppet-server,briancain/puppet-server,erikPrime/puppet-server,ahpook/puppet-server,fpringvaldsen/puppet-server,cprice404/puppetserver,camlow325/puppetserver,briancain/puppet-server,kylog/puppet-server,rlinehan/puppet-server,puppetlabs/puppetserver,erikPrime/puppetserver,camlow325/puppet-server,puppetlabs/puppet-server,erikPrime/puppetserver,rlinehan/puppetserver,waynr/puppet-server,erikPrime/puppet-server,waynr/puppetserver,waynr/puppetserver,camlow325/puppetserver,erikPrime/puppet-server,er0ck/puppetserver,er0ck/puppetserver,cprice404/puppetserver,puppetlabs/puppet-server,shrug/puppet-server,puppetlabs/puppetserver,puppetlabs/puppetserver,shrug/puppet-server,briancain/puppet-server,erikPrime/puppetserver