Scheduled Service Change - HAProxy for RDS (rds-proxy) deployment to be updated for proxied DBs

<div>The EC2 instances supporting HAProxy for RDS (rds-proxy) will be replaced. DB clients connected to RDS instances through rds-proxy will have connections ended, but will be able to reconnect immediately. <br><br>See this <a href="https://confluence.cornell.edu/x/r5EcFQ">Confluence resource page</a> (login required) for list of proxied RDS databases.</div>