Extend FT timeout period
Some tests failed with a timeout the job
"tacker-functional-devstack-multinode-python3".
This patch extends the timeout period of the job
to tenant max-job-timeout 10800 seconds (3 hours).
post-run: playbooks/devstack/post.yaml
roles:
- zuul: openstack-infra/devstack
- timeout: 9000
+ timeout: 10800
required-projects:
- openstack/cinder
- openstack/glance
