Implements accumulation of the fwdobjectives in ofdpa pipelines

Change-Id: I95cbdd9b3fb8d439003a103111a01dc3aee2072b
diff --git a/core/net/src/main/java/org/onosproject/net/OsgiPropertyConstants.java b/core/net/src/main/java/org/onosproject/net/OsgiPropertyConstants.java
index 3d6dec4..a88754f 100644
--- a/core/net/src/main/java/org/onosproject/net/OsgiPropertyConstants.java
+++ b/core/net/src/main/java/org/onosproject/net/OsgiPropertyConstants.java
@@ -131,4 +131,13 @@
     public static final String AUDIT_LOGGER = "auditLogger";
     public static final String AUDIT_LOGGER_DEFAULT = "securityAudit";
 
+    public static final String FOM_ACCUMULATOR_MAX_OBJECTIVES = "accumulatorMaxObjectives";
+    public static final int FOM_ACCUMULATOR_MAX_OBJECTIVES_DEFAULT = 1000;
+
+    public static final String FOM_ACCUMULATOR_MAX_IDLE_MILLIS = "accumulatorMaxIdleMillis";
+    public static final int FOM_ACCUMULATOR_MAX_IDLE_MILLIS_DEFAULT = 10;
+
+    public static final String FOM_ACCUMULATOR_MAX_BATCH_MILLIS = "accumulatorMaxBatchMillis";
+    public static final int FOM_ACCUMULATOR_MAX_BATCH_MILLIS_DEFAULT = 500;
+
 }