fuel-library repository has been moved from stackforge/ to openstack/ namespace.
fuel-tasklib repository got deprecated during migration, but it appears it is
still used in fuel-library CI. We add temporary workaround to run CI job
using fuel-tasklib package from fixed commit. The problem will be properly resolved
via related bug #1507208.
Change-Id: I8e2342c869a27fa1bb104fd46138ad27270f2d73
Related-Bug: #1507208