Add support for vnet in app service/functions

Author: sinedied

templates/common/infra/bicep/core/host/appservice.bicep

@@ -36,6 +36,7 @@ param scmDoBuildDuringDeployment bool = false
 param use32BitWorkerProcess bool = false
 param ftpsState string = 'FtpsOnly'
 param healthCheckPath string = ''
+param virtualNetworkSubnetId string = ''
 
 resource appService 'Microsoft.Web/sites@2022-03-01' = {
   name: name
@@ -61,6 +62,7 @@ resource appService 'Microsoft.Web/sites@2022-03-01' = {
     }
     clientAffinityEnabled: clientAffinityEnabled
     httpsOnly: true
+    virtualNetworkSubnetId: !empty(virtualNetworkSubnetId) ? virtualNetworkSubnetId : null
   }
 
   identity: { type: managedIdentity ? 'SystemAssigned' : 'None' }

templates/common/infra/bicep/core/host/functions.bicep

@@ -9,6 +9,7 @@ param appServicePlanId string
 param keyVaultName string = ''
 param managedIdentity bool = !empty(keyVaultName)
 param storageAccountName string
+param virtualNetworkSubnetId string = ''
 
 // Runtime Properties
 @allowed([
@@ -74,6 +75,7 @@ module functions 'appservice.bicep' = {
     runtimeNameAndVersion: runtimeNameAndVersion
     scmDoBuildDuringDeployment: scmDoBuildDuringDeployment
     use32BitWorkerProcess: use32BitWorkerProcess
+    virtualNetworkSubnetId: virtualNetworkSubnetId
   }
 }