US and DS priority bits' default value must be -1.
Note that the Dhcpl2relay app needs this change.

Change-Id: Ieb52999d5fa6e886cf76dd5884cea910831b7686
diff --git a/api/src/main/java/org/opencord/sadis/UniTagInformation.java b/api/src/main/java/org/opencord/sadis/UniTagInformation.java
index 8bdde45..fdcb301 100644
--- a/api/src/main/java/org/opencord/sadis/UniTagInformation.java
+++ b/api/src/main/java/org/opencord/sadis/UniTagInformation.java
@@ -262,10 +262,10 @@
         private VlanId uniTagMatch;
         private VlanId ponCTag;
         private VlanId ponSTag;
-        private int usPonCTagPriority;
-        private int usPonSTagPriority;
-        private int dsPonCTagPriority;
-        private int dsPonSTagPriority;
+        private int usPonCTagPriority = -1;
+        private int usPonSTagPriority = -1;
+        private int dsPonCTagPriority = -1;
+        private int dsPonSTagPriority = -1;
         private int technologyProfileId;
         private String upstreamBandwidthProfile;
         private String downstreamBandwidthProfile;