return network by name across projects for admin

Porting Ajay's changes from bitbuicket
(https://bitbucket.org/contrail_admin/quantum/commits/9a8b9dd21774/)
support port-list with id and name filter

Porting Ajay's commit from bitbucket.
(https://bitbucket.org/contrail_admin/quantum/commits/60eedc1ab6da/)