leverage ServiceConnector to setup connection to keyvault and DB - Keyvault reference#2

yungezz wants to merge 3 commits intoAzure-Samples:mainAzure-Samples/todo-csharp-sql:mainfrom

yungezz:sc-keyvaultrefyungezz/todo-csharp-sql:sc-keyvaultrefCopy head branch name to clipboard