Dashboard improvements - Githubissues

Some dashboard improvements:

Replace 1m by 2m. As the default scrape interval is 30s, the minimum range should be 4x times that interval
Remove pod variable from the etcd/hypershift dashboard, this variable is useless, there're only 3 etcd pods
Update deprecated metric names etcd_debugging_mvcc_put_total/etcd_debugging_mvcc_delete_total

cloud-bulldozer / performance-dashboards