(HI-298) Update hiera.yaml path in acceptance tests
(HI-298) Update hiera.yaml path in acceptance tests

This commit updates the path to the hiera.yaml file in accordance with the
pathing changes in commit 602c682. This path cannot yet be parameterized and
is hard coded to `/etc/puppetlabs/agent/code/hiera.yaml` in the 00-setup.rb
test.

MikaelSmith/hiera,ferventcoder/hiera,ferventcoder/hiera,ferventcoder/hiera,Iristyle/hiera,Iristyle/hiera,Iristyle/hiera,MikaelSmith/hiera,johnduarte/hiera,johnduarte/hiera,johnduarte/hiera,MikaelSmith/hiera