The port 8082 that used as api_server_port is reserved by MURANO

[Andrey Kirilochkin]

We do not want to use additional VIP on contrail-nodes.

default rule: contrail_vip:8082 -> contrail_api_ip:9100

That is why we reconfigured our haproxy on os-controller nodes.

our rule os_vip:9100 -> contrail_api_ip:9100

This port 8082 is used by OpenStack core-component "Murano".

Furthermore there is no way how to change this port in Fabric-scripts because it is hardcoded.

# grep -r 8082 .
./fabfile/cloudstack.py: '\napi.hostname=%s\napi.port=8082\nEOF' %cfgm_ip)
./fabfile/tasks/helpers.py: sudo("python demo_cfg.py --api_server_ip %s --api_server_port 8082 --public_subnet %s %s" %(cfgm_ip, testbed.public_vn_subnet, get_mt_opts()))
./fabfile/tasks/helpers.py: sudo("python add_route_target.py --routing_instance_name default-domain:demo:public:public --route_target_number %s --router_asn %s --api_server_ip %s --api_server_port 8082 %s" \
./fabfile/tasks/helpers.py: sudo("python create_floating_pool.py --public_vn_name default-domain:demo:public --floating_ip_pool_name pub_fip_pool --api_server_ip %s --api_server_port 8082 %s" %(cfgm_ip, get_mt_opts()))
./fabfile/tasks/helpers.py: sudo("python use_floating_pool.py --project_name default-domain:demo --floating_ip_pool_name default-domain:demo:public:pub_fip_pool --api_server_ip %s --api_server_port 8082 %s" %(cfgm_ip, get_mt_opts()))
./fabfile/tasks/misc.py: vnc_api_port = 8082
./fabfile/tasks/provision.py:frontend contrail-api *:8082
./fabfile/tasks/provision.py: cmd += " --api_port 8082"
./fabfile/tasks/provision.py: cmd += " --api_server_port 8082"
./fabfile/tasks/provision.py: cmd += " --api_server_port 8082"

Please use different port, and check if other OpenStack components use this port.
Make sure you have variable in testbed.py to define this port.