cloud-init fails to initialize with virtual router

Issue

• We are running into this bug and it appears like the fix is in latest cloud-init 19.x version.

• However, latest Red Hat cloud-init build is 18.5-12.

• Can we check if the fix could be back ported to the latest Red Hat cloud-init version?

• We have the exact same error message as the upstream bug:

2020-06-02 19:17:15,641 - util.py[WARNING]: failed stage init
failed run of stage init
------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/cloudinit/cmd/main.py", line 652, in status_wrapper
    ret = functor(name, args)
  File "/usr/lib/python3.6/site-packages/cloudinit/cmd/main.py", line 362, in main_init
    init.apply_network_config(bring_up=bool(mode != sources.DSMODE_LOCAL))
  File "/usr/lib/python3.6/site-packages/cloudinit/stages.py", line 649, in apply_network_config
    netcfg, src = self._find_networking_config()
  File "/usr/lib/python3.6/site-packages/cloudinit/stages.py", line 636, in _find_networking_config
    if self.datasource and hasattr(self.datasource, 'network_config'):
  File "/usr/lib/python3.6/site-packages/cloudinit/sources/DataSourceOpenStack.py", line 115, in network_config
    self.network_json, known_macs=None)
  File "/usr/lib/python3.6/site-packages/cloudinit/sources/helpers/openstack.py", line 645, in convert_net_json
    'Unknown network_data link type: %s' % link['type'])
ValueError: Unknown network_data link type: vrouter