Export New-AzVirtualNetworkGatewayCertificateAuthentication cmdlet in Az.Network module manifest

Author: brandonv191

src/Network/Network/Az.Network.psd1

@@ -504,6 +504,7 @@ CmdletsToExport = 'Add-AzApplicationGatewayAuthenticationCertificate',
                'New-AzVirtualHubRoute', 'New-AzVirtualHubRouteTable', 
                'New-AzVirtualHubVnetConnection', 'New-AzVirtualNetwork', 
                'New-AzVirtualNetworkGateway', 
+               'New-AzVirtualNetworkGatewayCertificateAuthentication', 
                'New-AzVirtualNetworkGatewayConnection', 
                'New-AzVirtualNetworkGatewayIpConfig', 
                'New-AzVirtualNetworkGatewayMigrationParameter',