[SDFAB-90] Implement priority mechanism in the Policy framework.

Change-Id: I738956566bfcf1bd5e2d4fcd9bfef153b5fb674a
diff --git a/web/src/main/resources/definitions/TrafficMatchCreate.json b/web/src/main/resources/definitions/TrafficMatchCreate.json
index 3ab1022..f901e33 100644
--- a/web/src/main/resources/definitions/TrafficMatchCreate.json
+++ b/web/src/main/resources/definitions/TrafficMatchCreate.json
@@ -3,6 +3,7 @@
   "title": "traffic-match-creation",
   "required": [
     "policy_id",
+    "priority",
     "selector"
   ],
   "properties": {
@@ -11,6 +12,11 @@
       "example": "DROP",
       "description": "ID of associated policy"
     },
+    "priority": {
+      "type": "int",
+      "example": "60000",
+      "description": "Priority of the TrafficMatch"
+    },
     "selector": {
       "type": "object",
       "title": "selector",