Stop Elasticsearch properly with invoker.

use start_cluster rake task for elastic test This will allow for a longer bootup-time before a timeout.

Delete the solr commands in the invoker file.

Added the testserver for elasticsearch

Added commands for starting the elasticsearch server and the test elasticsearch server.

force invoker to port 3000 This is to circumvent development problems with the hets-api.

support invoker for managing hets.

add new queue for priority pushes.

add test-mode solr to invoker.

add invoker configuration file.