This runs a Github Action to:
* Deploy Devstack with Neutron
* Run acceptance/openstack/networking
* Unskip a lot of tests
* Do not test FWaaS v1, too old and will be removed from Gophercloud via gophercloud#2320
* Skip FWAAS v2 testing after Ussuri (service was removed); and deploy it only on
  Ussuri and Train, so it can still be tested.
* Fix a test for FWAAS, where ICMP rule can't have a port in source and
  source/dest have to be comma separated ranges.
* Skip TestAgentsRUD because it can't work with OVN (default in devstack
  now). This test will have to be reworked in the future.
* Fix TestDNSPortCRUDL test (some typos)
* Skip TestLayer3RouterAgents because it can't work with OVN (default
  in devstack now). This test will have to be rewored in the future.
* Skip TestDNSFloatingIPCRDL which doesn't work with ML2/OVN
* Skip LBAAS (v1 and v2) from Neutron API, it was removed and replaced by Octavia.
  We'll need to deprecate and remove it from Gophercloud as well.
* In TestMTUNetworkCRUDL, reduce the MTU to 1440. With OVN + Geneve, we
  can't go above 1442, so let's set 1440 for the test to be safe.
* Skip VlanTransparent, Trunk and QoS testing if the extension is not there.
* Post logs if we encounter a failure