Fix DataFile - Align Dmaap Topic configuration

Remove additional configuration in Blueprints
Remove additional configruation in component
specs

Change-Id: I0d546227af0be485f2ffed27a93c701a7654ff8e
Issue-ID: DCAEGEN2-1145
Signed-off-by: YongchaoWu <yongchao.wu@est.tech>
diff --git a/datafile-app-server/dpo/spec/dmaap.json b/datafile-app-server/dpo/spec/dmaap.json
index 64ceb88..c065899 100644
--- a/datafile-app-server/dpo/spec/dmaap.json
+++ b/datafile-app-server/dpo/spec/dmaap.json
@@ -8,7 +8,7 @@
   "datafile_publish_dr": {
     "type": "data_router",
     "dmaap_info": {
-      "publish_url": ""
+      "publish_url": "/publish"
     }
   }
 }