Fixups so we can use 2019 spec

Author: matthchr

schemas/2019-04-01/deploymentTemplate.json

@@ -1280,6 +1280,7 @@
                   { "$ref": "https://schema.management.azure.com/schemas/2020-06-01/Microsoft.Network.json#/resourceDefinitions/networkSecurityGroups" },
                   { "$ref": "https://schema.management.azure.com/schemas/2020-06-01/Microsoft.Network.json#/resourceDefinitions/networkSecurityGroups_securityRules" },
                   { "$ref": "https://schema.management.azure.com/schemas/2020-06-01/Microsoft.Network.json#/resourceDefinitions/networkVirtualAppliances" },
+                  { "$ref": "https://schema.management.azure.com/schemas/2020-06-01/Microsoft.Network.json#/resourceDefinitions/networkVirtualAppliances_inboundSecurityRules" },
                   { "$ref": "https://schema.management.azure.com/schemas/2020-06-01/Microsoft.Network.json#/resourceDefinitions/networkVirtualAppliances_virtualApplianceSites" },
                   { "$ref": "https://schema.management.azure.com/schemas/2020-06-01/Microsoft.Network.json#/resourceDefinitions/networkWatchers" },
                   { "$ref": "https://schema.management.azure.com/schemas/2020-06-01/Microsoft.Network.json#/resourceDefinitions/networkWatchers_connectionMonitors" },