Topic sensor network

When an observation type instance is posted to the endpoint /amtech/things/events:

• the observation gets validated versus the semantic of the '@type'
• #{placeholders} get enriched
• location and proximity enrichment happens

If an error occurs an observation type observationoutputmsg get send to the sensor network topic

   {
       "topic": "/sensor_network/observation_errors/observationresourcecrud",
       "_tenant": "m2mcreator",
       "@type": "/amtech/linkeddata/types/composite/observation/observationoutputmsg",
       "resource": "{\"topic\":\" /helloWorld/asynch\",\"_tenant\":\"m2mcreator\",\"targetthings\":\"[]\",\"@type\":\"/amtech/linkeddata/types/composite/observation/observationresourcecrud\",\"propId\":\"hwgreetingLabel\",\"resourceuri\":\"/amtech/things/entities/HelloWorld/helloWorld\",\"resourcetype\":\"/amtech/linkeddata/types/composite/entity/HelloWorld\",\"newvalue\":\"heyWithError\",\"guesttenants\":[],\"oldvalue\":\"hey\",\"crudoperation\":\"PUT\",\"producer\":\"helloWorld\",\"detectiontime\":\"2016-04-22T18:33:11.481Z\",\"@id\":\"/amtech/things/observations/helloWorld5226521372857087\",\"occurrencetime\":\"2016-04-22T18:33:10.948Z\",\"_user\":\"m2mcreator@amtech.mx\"}",
       "_name": "idbf740e7d83064ba492c9ca33d20617a0",
       "resourcetype": "/amtech/linkeddata/types/composite/observation/observationresourcecrud",
       "message": "Failed registering topic for observation",
       "guesttenants": [],
       "producer": "enrichment-topology",
       "detectiontime": "Fri Apr 22 18:33:11 UTC 2016",
       "@id": "/amtech/things/observations/6de7bf42-2ea6-4140-a8f4-a427bc119701",
       "success": false,
       "messagedetail": "Error registering topic '/amtech/things/eventsources/ ': Resource /amtech/things/eventsources/  is not valid for its type definition. Property @idcannot contain blank spaces. ",
       "_user": "m2mcreator@amtech.mx"
   }