Make network_router_controller_spec a shared spec
Make network_router_controller_spec a shared spec

Make network_router_controller_spec a shared spec, which can be
called from a provider gem as with a provider parameter.
(transferred from ManageIQ/manageiq@fb198cd34ae3e5061efd0498166bad28ad3fd317)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic