[SDFAB-352][SDFAB-353] Retrieve MeterFeatures from the P4RT southbound, Extend MeterProviderService and revisit MeterStore

Change-Id: I083df67ae5cf0513d82d0ccf00c790d2bb000ef4
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterProviderService.java b/core/api/src/main/java/org/onosproject/net/meter/MeterProviderService.java
index 29c251c..e96e224 100644
--- a/core/api/src/main/java/org/onosproject/net/meter/MeterProviderService.java
+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterProviderService.java
@@ -54,6 +54,14 @@
     void pushMeterFeatures(DeviceId deviceId,
                            MeterFeatures meterfeatures);
 
+    /**
+     * Pushes the collection of meter features collected from the device.
+     *
+     * @param deviceId the device Id
+     * @param meterfeatures the meter features
+     */
+    void pushMeterFeatures(DeviceId deviceId,
+                           Collection<MeterFeatures> meterfeatures);
 
     /**
      * Delete meter features collected from the device.