Make ``recon_max`` 10 seconds, down from 59 seconds

Some large infrastructures will want a higher value here to prevent auth
floods, but a value of 59 seconds will result in up to a minute delay on
a master restart before minions come back.  10 seconds is a more
reasonable default here.
Merge pull request #13743 from basepi/recon_max

Make ``recon_max`` 10 seconds, down from 59 seconds