Fix for the Issue - flow rules greater than max-priority ONOS-4613 .

Change-Id: I8870eb5f8840ed2f04cfac3b5c70d6bd7f249a1d
diff --git a/core/api/src/main/java/org/onosproject/net/flow/FlowRule.java b/core/api/src/main/java/org/onosproject/net/flow/FlowRule.java
index 24db94e..ecec89c 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/FlowRule.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/FlowRule.java
@@ -27,6 +27,7 @@
 
     int MAX_TIMEOUT = 60;
     int MIN_PRIORITY = 0;
+    int MAX_PRIORITY = 65535;
 
     /**
      * Returns the ID of this flow.