Description of problem:
Overcloud deployment with ML2/OVS network backend + DVR fails complaining on missing net_config_bridge.j2

2022-01-03 19:51:29.921 136583 ERROR tripleoclient.v1.overcloud_deploy.DeployOvercloud [-] Exception occured while running the command: heatclient.exc.CommandError: Could not fetch contents for file:///home/stack/overcloud-deploy/overcloud/tripleo-heat-templates/environments/templates/net_config_bridge.j2
2022-01-03 19:51:29.921 136583 ERROR tripleoclient.v1.overcloud_deploy.DeployOvercloud Traceback (most recent call last):
2022-01-03 19:51:29.921 136583 ERROR tripleoclient.v1.overcloud_deploy.DeployOvercloud   File "/usr/lib64/python3.6/urllib/request.py", line 1505, in open_local_file
2022-01-03 19:51:29.921 136583 ERROR tripleoclient.v1.overcloud_deploy.DeployOvercloud     stats = os.stat(localfile)
2022-01-03 19:51:29.921 136583 ERROR tripleoclient.v1.overcloud_deploy.DeployOvercloud FileNotFoundError: [Errno 2] No such file or directory: '/home/stack/overcloud-deploy/overcloud/tripleo-heat-templates/environments/templates/net_config_bridge.j2'


Please find overcloud_deploy.sh script below [1]
The script has reference to /usr/share/openstack-tripleo-heat-templates/environments/neutron-ovs-dvr.yaml file which contains following lines:


  # With using default template values, the Compute nodes also need the br-ex
  # bridge to be connected to a physical network.
  ComputeNetworkConfigTemplate: 'templates/net_config_bridge.j2'

However during rendering j2 templates to files under /home/stack/overcloud-deploy/overcloud/tripleo-heat-templates/ the templates/net_config_bridge.j2 is not found.

Note: DVR is the default configuration, so the issue should be fixed ASAP.



Version-Release number of selected component (if applicable):
RHOS-17.0-RHEL-8-20211208.n.1

How reproducible:
100%

Steps to Reproduce:
1. Try to deploy OSP17 environment with ML2/OVS network backend + DVR

Actual results:
Overcloud deploy fails due to missing net_config_bridge.j2 during rendering j2 templates 

Expected results:
Overcloud deploy succeeds

Additional info:

[1] overcloud_deploy.sh script

#!/bin/bash

openstack overcloud deploy \
--timeout 100 \
--templates /usr/share/openstack-tripleo-heat-templates \
--stack overcloud \
--libvirt-type kvm \
--ntp-server clock1.rdu2.redhat.com \
--deployed-server \
-e /home/stack/templates/overcloud-vip-deployed.yaml \
-e /home/stack/templates/overcloud-networks-deployed.yaml \
-e /home/stack/templates/overcloud-baremetal-deployed.yaml \
--disable-protected-resource-types \
--networks-file /home/stack/virt/network/network_data_v2.yaml \
-e /home/stack/virt/config_lvm.yaml \
-e /usr/share/openstack-tripleo-heat-templates/environments/neutron-ovs-dvr.yaml \
-e /home/stack/virt/network/network-environment_v2.yaml \
-e /home/stack/virt/enable-tls.yaml \
-e /home/stack/virt/inject-trust-anchor.yaml \
-e /home/stack/virt/public_vip.yaml \
-e /usr/share/openstack-tripleo-heat-templates/environments/ssl/tls-endpoints-public-ip.yaml \
-e /home/stack/virt/hostnames.yml \
-e /home/stack/virt/debug.yaml \
-e /home/stack/virt/config_heat.yaml \
-e /home/stack/virt/nodes_data.yaml \
-e ~/containers-prepare-parameter.yaml \
-e /home/stack/virt/nova-resize-on-the-same-host.yaml \
-e /home/stack/virt/dns.yaml \
-e /home/stack/virt/l3_fip_qos.yaml \
-e /home/stack/virt/floating_ip_port_forwarding.yaml \
-e /home/stack/virt/set-nova-scheduler-filter.yaml \
--log-file overcloud_deployment_44.log