List Admin Keys / Redis / Azure Search

adminkeys.json

// Redis
"redis": {
    "value": "[concat(reference(resourceId('Microsoft.Cache/Redis', variables('RedisCache').Name)).hostName, variables('RedisCache').WebAppRedisSettingText, listKeys(resourceId('Microsoft.Cache/Redis', variables('RedisCache').Name), '2015-08-01').primaryKey)]",
    "type": "Custom"
}
// Search
"properties": {
    "Search:Key": "[listAdminKeys(resourceId('Microsoft.Search/searchServices/', variables('searchAppName')), '2015-08-19').primaryKey]",
}