This fix is part of the effort to address 30242 where
issue arise because of the fact that multiple networks
may share the same name (within or across local/swarm scopes).
The focus of this fix is to allow creation of service
when a network in local scope has the same name as the
service network.
An integration test has been added.
This fix fixes 30242.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>