Adding Key Vault reference info to CLI samples

Author: lisaguthrie

articles/azure-app-configuration/scripts/cli-work-with-keys.md

@@ -38,6 +38,9 @@ You need to install the Azure App Configuration CLI extension first by executing
 
 appConfigName=myTestAppConfigStore
 newKey="TestKey"
+refKey="KeyVaultReferenceTestKey"
+uri="[URL to value stored in Key Vault]"
+uri2="[URL to another value stored in Key Vault]"
 
 # Create a new key-value 
 az appconfig kv set --name $appConfigName --key $newKey --value "Value 1"
@@ -51,9 +54,24 @@ az appconfig kv set --name $appConfigName --value "Value 2"
 # List current key-values
 az appconfig kv list --name $appConfigName
 
+# Create a new key-value referencing a value stored in Azure Key Vault
+az appconfig kv set --name $appConfigName --key $refKey --content-type "application/vnd.microsoft.appconfig.keyvaultref+json;charset=utf-8" --value "{\"uri\":\"$uri\"}"
+
+# List current key-values
+az appconfig kv list --name $appConfigName
+
+# Update Key Vault reference
+az appconfig kv set --name $appConfigName --key $refKey --value "{\"uri\":\"$uri2\"}"
+
+# List current key-values
+az appconfig kv list --name $appConfigName
+
 # Delete new key
 az appconfig kv delete  --name $appConfigName --key $newKey
 
+# Delete Key Vault reference
+az appconfig kv delete --name $appConfigName --key $refKey
+
 # List current key-values
 az appconfig kv list --name $appConfigName
 ```