Adding more regions (#660)

Author: tonybaloney

infra/main.bicep

@@ -35,7 +35,7 @@ param openAiHost string // Set in main.parameters.json
 param openAiServiceName string = ''
 param openAiResourceGroupName string = ''
 @description('Location for the OpenAI resource group')
-@allowed(['canadaeast', 'eastus', 'francecentral', 'japaneast', 'northcentralus'])
+@allowed(['canadaeast', 'eastus', 'eastus2', 'francecentral', 'switzerlandnorth', 'uksouth', 'japaneast', 'northcentralus'])
 @metadata({
   azd: {
     type: 'location'