Bug fix: Make parameter mandatory

Author: dihan0604

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

@@ -74,7 +74,7 @@ public class NewAzureExpressRouteCircuitCommand : ExpressRouteCircuitBaseCmdlet
         public string ServiceProviderName { get; set; }
 
         [Parameter(
-             Mandatory = false,
+             Mandatory = true,
              ValueFromPipelineByPropertyName = true)]
         public string PeeringLocation { get; set; }
 

src/ResourceManager/Network/Commands.Network/ExpressRouteCircuit/Peering/AzureExpressRouteCircuitPeeringConfigBase.cs

@@ -39,7 +39,7 @@ public class AzureExpressRouteCircuitPeeringConfigBase : NetworkBaseCmdlet
         public string PeeringType { get; set; }
 
         [Parameter(
-            Mandatory = false,
+            Mandatory = true,
             HelpMessage = "The PeerAsn")]
         [ValidateNotNullOrEmpty]
         public int PeerASN { get; set; }

src/ServiceManagement/ExpressRoute/Commands.ExpressRoute/BgpPeerings/SetAzureBGPPeering.cs

@@ -34,7 +34,7 @@ public class SetAzureBGPPeeringCommand : ExpressRouteBaseCmdlet
         [Parameter(Mandatory = false, ValueFromPipelineByPropertyName = true, HelpMessage = "Customer AS number")]
         public UInt32 CustomerAsn { get; set; }
 
-        [Parameter(Mandatory = false, ValueFromPipelineByPropertyName = true,
+        [Parameter(Mandatory = true, ValueFromPipelineByPropertyName = true,
             HelpMessage = "Peer Asn")]
         public UInt32? PeerAsn { get; set; }
 
@@ -53,7 +53,7 @@ public class SetAzureBGPPeeringCommand : ExpressRouteBaseCmdlet
         [ValidateNotNullOrEmpty]
         public string SharedKey { get; set; }
 
-        [Parameter(Mandatory = false, ValueFromPipelineByPropertyName = true, HelpMessage = "Vlan Id")]
+        [Parameter(Mandatory = true, ValueFromPipelineByPropertyName = true, HelpMessage = "Vlan Id")]
         public UInt32? VlanId { get; set; }
 
         [Parameter(Mandatory = false, ValueFromPipelineByPropertyName = true, HelpMessage = "Bgp Peering Access Type: Microsoft, Public or Private")]