Update display name
Updated display name from solr to Apache Solr
-{ "display_name":"solr",
+{ "display_name":"Apache Solr",
"description": "Monitor apache solr using the SignalFx collectd agent.",
"project_url": "https://github.com/signalfx/integrations/tree/master/collectd-solr",
"code": "https://github.com/signalfx/collectd-solr",
