Version 2.0.0-alpha.99

"Better instrumenting (#440)\n\n* Switch etcd Node Directory to use leases instead of a polling approach to expiration.\r\n\r\n* Log messages for connection and disconnection of clients to server, debug information about current connections.\r\n\r\nCo-authored-by: Brett Morien bmorien@ea.com"
"Release version 2.0.0-alpha.98 and update docs"