How to change the MTU which is advertised in neutron tenant networks by dnsmasq in Red Hat OpenStack?

Solution In Progress - Updated 2016-07-18T20:16:32+00:00 -

Issue

In Red Hat OpenStack Director based deployments, how can one change the MTU which dnsmasq advertises on tenant networks?

Red Hat OpenStack Platform 8.0
Red Hat Enterprise Linux OpenStack Platform 7.0

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