use one disk check for all servers
use group not name
remove prod1 [uses 127 address so is prod6 on prod6]
styling fixes
use more appropriate values for -w and -c
add mediawiki hostgroup and mail hostgroup with services attached
have more specific server groups in production and local.yml and remove searchservers which is unused
migrate hostname to hostgroupname
Revert "use more appropriate values for -w and -c"

This reverts commit 2e88044099aff9d9ffccb8a07ed361a015011772.