The openstack_networking_subnet_v2 resource was originally designed
to have DHCP disabled by default; however, a bug in the original
implementation caused DHCP to always be enabled and never be
disabled. This bug was fixed in #6052.
Recent discussions have shown that users prefer if DHCP is enabled
by default. This commit implements makes the change.
This commit adds a no_gateway attribute. When set, the subnet will
not have a gateway. This is different than not specifying a
gateway_ip since that will cause a default gateway of .1 to be used.
This behavior mirrors the OpenStack Neutron command-line tool.
Fixes#6031
Joe Topjian