[VOL-4180] Multi UNI feature implemented to OLT application.

Change-Id: I3d45719ebdce304ba94652ed9de553e40d76a77c

EAPOL flow bug-fixed

review fixes finshed

Multi UNI feature implemented to OLT application.

- It's possible to fetch a meter by annotations. (OltPipeline)
- New meters can be created for bandwidth profiles of OLT device.
- Olt meterId is transported via writeMetadata so that voltha/rw-core can parse it and assign the correct meters to ONU and OLT flows.

Change-Id: Ia6c9909b5f03b0f3fe329bd11580f891bfab3a32
diff --git a/impl/src/main/java/org/opencord/olt/impl/OsgiPropertyConstants.java b/impl/src/main/java/org/opencord/olt/impl/OsgiPropertyConstants.java
index 1db37e5..0e82f37 100644
--- a/impl/src/main/java/org/opencord/olt/impl/OsgiPropertyConstants.java
+++ b/impl/src/main/java/org/opencord/olt/impl/OsgiPropertyConstants.java
@@ -62,4 +62,9 @@
 
     public static final String REQUIRED_DRIVERS_PROPERTY_DELAY = "requiredDriversPropertyDelay";
     public static final int REQUIRED_DRIVERS_PROPERTY_DELAY_DEFAULT = 5;
+
+    public static final String UPSTREAM_ONU = "upstreamOnu";
+    public static final String UPSTREAM_OLT = "upstreamOlt";
+    public static final String DOWNSTREAM_ONU = "downstreamOnu";
+    public static final String DOWNSTREAM_OLT = "downstreamOlt";
 }