This is combined patch to fix couple of issues which
we recently had in gate.
1. [Functional tests] Fix SIGHUP handling tests
Tests in neutron.functional.test_server module are testing how
PluginWorker, WSGIWorker and RPCWorker are handling SIGHUP signal.
Recently this was changed in Oslo.service with [1] and our tests
were failing because they were still expecting that after sending
SIGHUP to the process, stop() and than start() method will be called.
But as our services uses "mutate" as restart method, since [1] such
process don't executes stop() and start() after SIGHUP. It now executes
only reset() method.
This patch reflects that change in Neutron functional tests.
2. Veth pair "IFLA_LINK" populated since kernel 4.15.0-60-generic
Since kernel_version=4.15.0-60-generic, "iproute2" provides the veth
pair index, even if the pair interface is in other namespace. In
previous versions, the parameter 'IFLA_LINK' was not present. We need
to handle both cases
[1] https://review.opendev.org/#/c/641907/
Co-Authored-By: Rodolfo Alonso Hernandez <ralonsoh@redhat.com>
Change-Id: I7a3f20a795c89ab1ab037d046a1101cd5c0287d6
Closes-Bug: #1842659
Closes-Bug: #1842482
bacc7abf83