Comment 2 for bug 1826179

[1] add the needed upgrade step to extract the DB data from nova_api db to the new placement db, but the upgrade tasks still fail with this error [2].

We seem to miss the links in /etc/puppet/modules to /usr/share/openstack-puppet/modules/* :

[root@standalone openstack-tripleo-heat-templates]# paunch debug --file /var/lib/tripleo-config/hashed-container-startup-config-step_2.json --interactive --shell --user root --container placement_init_log --action run
()[root@bd8e30391735 /]# ls -la /etc/puppet/modules/
total 0
drwxr-xr-x. 2 root root 6 Oct 31 2018 .
drwxr-xr-x. 3 root root 57 May 4 00:23 ..

[root@standalone openstack-tripleo-heat-templates]# paunch debug --file /var/lib/tripleo-config/hashed-container-startup-config-step_2.json --interactive --shell --user root --container cinder_scheduler_init_logs --action run
()[root@bde471ce86c0 /]# ls -la /etc/puppet/modules/
total 0
drwxr-xr-x. 2 root root 6 Oct 31 2018 .
drwxr-xr-x. 3 root root 57 May 4 00:23 ..

[1] https://review.opendev.org/#/c/635134/
[2] http://logs.openstack.org/34/635134/13/check/tripleo-ci-centos-7-standalone-upgrade/0d17721/logs/undercloud/home/zuul/standalone_upgrade.log.txt.gz#_2019-05-04_00_03_21