[#4200] - restore MaxOpenConnections setting for lock.
[#4200] - restore MaxOpenConnections setting for lock.

Signed-off-by: Eric Billingsley <96f164ad4d9b2b0dacf8ebee2bb1eeb3aa69adf1@calculi.com>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse