add support to set command to allow piping

Author: dedhar

src/ResourceManager/Network/Commands.Network/ExpressRouteCircuit/SetAzureExpressRouteCircuitCommand.cs

@@ -28,6 +28,7 @@ public class SetAzureExpressRouteCircuitCommand : ExpressRouteCircuitBaseCmdlet
         [Parameter(
             Mandatory = true,
             ValueFromPipeline = true,
+            ValueFromPipelineByPropertyName = true,
             HelpMessage = "The ExpressRouteCircuit")]
         public PSExpressRouteCircuit ExpressRouteCircuit { get; set; }