This cherry-pick is modified to omit the RPC modification of the
original patch. Instead it only drops the code that would generate an
exception if there are two different external networks. Tests are
amended accordingly.
Original patch description:
Remove get_external_network_id for router
L3 agent supports multiple external networks from a long
time ago, so remove this RPC call since it is not used.
According to codesearch of [1] and [2], we just remove
neutron built-in L3 agent RPC. For neutron server side
or RPC callback classes, the function is still remained.
[1] http://codesearch.openstack.org/?q=get_external_network_id
[2] http://codesearch.openstack.org/?q=L3RpcCallback
Conflicts:
neutron/agent/l3/agent.py
Change-Id: I764423e175d6e82729a647e415a9f267f495916f
Closes-Bug: #1844168
(cherry picked from commit f51e5ce924)
197c57cf23