Support install IntIntents to device with postcard mode

Include the following changes:
 - INT application now can install reuls/configs to the device based on the
   Int intent telemetry mode and the functionality supported by device.
 - Add "Telemetry Mode" option to INT app GUI

Change-Id: I1a9938b076030497a3b2984abe66fed09c190c7d
diff --git a/apps/inbandtelemetry/intApp-gui2/intApp/lib/intapp/intapp.component.ts b/apps/inbandtelemetry/intApp-gui2/intApp/lib/intapp/intapp.component.ts
index c4f9ba4..a884882 100644
--- a/apps/inbandtelemetry/intApp-gui2/intApp/lib/intapp/intapp.component.ts
+++ b/apps/inbandtelemetry/intApp-gui2/intApp/lib/intapp/intapp.component.ts
@@ -82,6 +82,7 @@
             l4SrcPort: new FormControl(null, [ Validators.pattern(regSendPort)]),
             l4DstPort: new FormControl(null, [ Validators.pattern(regSendPort)]),
             protocol: new FormControl(),
+            telemetryMode: new FormControl("POSTCARD")
         });
         this.log.debug('IntAppComponent initialized');
     }
@@ -120,7 +121,8 @@
             "l4SrcPort": this.formSend.value.l4SrcPort,
             "l4DstPort": this.formSend.value.l4DstPort,
             "protocol": this.formSend.value.protocol,
-            "metadata": this.formSend.value.name
+            "metadata": this.formSend.value.name,
+            "telemetryMode": this.formSend.value.telemetryMode
         };
         this.wss.sendEvent(intIntentAddReq, intentObjectNode);
     }