Update acceptance tests after internal machines were renamed.

This updates the acceptance test performance suite to reflect internal machine
name changes on the Puppet Labs network.  This restores the acceptance tests
to their fully functional, original state.

Signed-off-by: Daniel Pittman <daniel@rimspace.net>
Merge pull request #482 from daniel-pittman/bug/master/adapt-to-changed-internal-machine-name-in-acceptance-tests

Update acceptance tests after internal machines were renamed.