Add ansible tests for item_tasks plugin
Add ansible tests for item_tasks plugin

This should exercise the ability of vagrant up/provision/destroy the
included Vagrantfile for the item tasks plugin. These tests are only
added if CMake is run with ANSIBLE_TESTS=ON as they are long running
and shouldn't be run during typical CI.

Xarthisius/girder,Kitware/girder,Kitware/girder,Xarthisius/girder,adsorensen/girder,Kitware/girder,girder/girder,kotfic/girder,kotfic/girder,jbeezley/girder,RafaelPalomar/girder,RafaelPalomar/girder,girder/girder,adsorensen/girder,data-exp-lab/girder,data-exp-lab/girder,sutartmelson/girder,manthey/girder,RafaelPalomar/girder,manthey/girder,data-exp-lab/girder,manthey/girder,sutartmelson/girder,RafaelPalomar/girder,girder/girder,jbeezley/girder,kotfic/girder,girder/girder,Kitware/girder,data-exp-lab/girder,sutartmelson/girder,jbeezley/girder,Xarthisius/girder,Xarthisius/girder,jbeezley/girder,adsorensen/girder,kotfic/girder,RafaelPalomar/girder,kotfic/girder,sutartmelson/girder,manthey/girder,Xarthisius/girder,adsorensen/girder,adsorensen/girder,data-exp-lab/girder,sutartmelson/girder