If00afb50c37b45aefbb45070da4efef3e43e62b2 updated the requirements
update job to use tox as part of the update checking script. We have
ensure-tox as one of the roles in the pre playbook for this job, but it
is not set to be made available globally, which results in the script
failing with being unable to find tox.
This updates the role inclusion to set ensure_global_symlinks: true so
tox will be available in the script.
Change-Id: I5d3ed4ce62cd8df604802fedf522d644d5664698
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
118a7ba3d4