add tests for stats api

Author: dihan0604

src/ResourceManager/Network/Commands.Network.Test/ScenarioTests/ExpressRouteCircuitTests.ps1

@@ -182,6 +182,9 @@ function Test-ExpressRouteCircuitPrivatePublicPeeringCRUD
 		Assert-AreEqual "22" $circuit.Peerings[0].VlanId
 
 		Get-AzureRmExpressRouteCircuitARPTable -ResourceGroupName $rgname -ExpressRouteCircuitName $circuit.Name -PeeringType AzurePrivatePeering -DevicePath Primary
+		Get-AzureRmExpressRouteCircuitRouteTableSummary -ResourceGroupName $rgname -ExpressRouteCircuitName $circuit.Name -PeeringType AzurePrivatePeering -DevicePath Primary
+		Get-AzureRmExpressRouteCircuitRouteTable -ResourceGroupName $rgname -ExpressRouteCircuitName $circuit.Name -PeeringType AzurePrivatePeering -DevicePath Primary
+		
 		# get peering
 		$p = $circuit | Get-AzureRmExpressRouteCircuitPeeringConfig -Name AzurePrivatePeering
 		Assert-AreEqual "AzurePrivatePeering" $p.Name