Increase socket timeout allowance for Icinga Puppetmaster HTTPS check

This check is flapping constantly and making #wikimedia-operations borderline
unusable unless you /ignore icinga-wm. The default timeout of 10 seconds ought
to be enough but isn't. It won't help to pretend stafford is more performant
than it actually is. Setting it to 30 with the hope that it reduces the noise.

Change-Id: I613a03810b2b1d5c48b52e3c4d3dc0a9a1ca4c1c