Reduce connect timeout in MediaWiki::triggerJobs

Reduce connect timeout in MediaWiki::triggerJobs

The fifth parameter to fsockopen is the number of seconds
to wait before declaring the connection a failure. When not
provided it defaults to the php ini value of 'default_socket_timeout'
which is 60s.  Under no circumstances should we wait 60s to
connect to ourselves,  100ms seems like a reasonable timeout
since its explicitly connecting to itself, but the exact timeout
could be slightly longer.

Change-Id: I18d328274ddf1e0848fce40ebf39e0466b5c4d5d