Randomize minion reconnects by default

I've opened this pull req to open a discussion.

By setting recon_randomize: True   the salt-minions reconnect at a random time between the recon_default and the recon_max. Since recon_max is set to 5000 milliseconds, all minions should connect within 5 seconds.

On larger deployments having recon_randomize: False was causing unrecoverable minion floods. Does anyone have any objections to making recon_randomiz: True the default?