analyzeDoc endpoint update

analyzeDoc endpoint wasn't analysing documents
with any arbitrary type when the default mapping
was enabled.
This change fixes that.

Change-Id: I50628ab7d14fde7c19a8c3d9b50d135a522de7d0
Reviewed-on: http://review.couchbase.org/113735
Well-Formed: Build Bot <build@couchbase.com>
Reviewed-by: Steve Yen <steve.yen@gmail.com>
Tested-by: Sreekanth Sivasankaran <sreekanth.sivasankaran@couchbase.com>

pindex_rest_handlers.go

@@ -101,7 +101,7 @@ func AnalyzeDoc(mgr *cbgt.Manager, indexName, indexUUID string,
 	}
 
 	var cbftDoc *BleveDocument
-	cbftDoc, err = bdest.bleveDocConfig.BuildDocument(nil, req, defaultType)
+	cbftDoc, err = bdest.bleveDocConfig.BuildDocument([]byte("key"), req, defaultType)
 	if err != nil {
 		return err
 	}
@@ -111,7 +111,7 @@ func AnalyzeDoc(mgr *cbgt.Manager, indexName, indexUUID string,
 		return err
 	}
 
-	doc := document.NewDocument("dummy")
+	doc := document.NewDocument("key")
 	err = bindex.Mapping().MapDocument(doc, cbftDoc)
 	if err != nil {
 		return err