Fix ansible playbooks after docker directory was removed here

In I30a61aebcadef5536e74edd35e1c75ef77a2da9f, we moved the Dockerfiles
from here to docker-playground.git, but failed to adjust the ansible
playbook that wants to rebuild those containers during setting up of
a build slave.

Change-Id: Ife64fdaf24107b0b31b8a6d4c78a1df420662ca0
Related: OS#4345
Closes: OS#4377
1 file changed