Refactor tasks for version 2.0.0
Refactor tasks for version 2.0.0

Version 2.0.0 tasks enable parallel deployment and
cross-dependencies. This patch adds support to the
plugin so that the other tasks can be deployed as such.

Change-Id: I074d3d6abd93af25697a970860ea464cd2065aa7
Partial-Bug: #1548340

stackforge/fuel-plugin-detach-rabbitmq