Added functions to test/services.clj to launch PuppetDB instances from
the REPL
Moved the launch-puppetdb functions into a new testutils.repl namespace
Added preconditions to the launch-puppetdb fn
Merge pull request #725 from senior/maint/master/add-fn-for-launching-in-repl

Added functions to test/services.clj to launch PuppetDB instances from the REPL