This fixes an issue where subsequent tests will fail when the RS_PROVISION=no and RS_DESTROY=no flag is set for centos. The error is caused by attempting to install the puppet rpm on a machine that already has the puppet rpm installed.
This commit adds tests for the parameters that were previously untested.
Most of this testing is light, but all parameters of the module are now
called at least once. Generally we're testing the happy path, so these
need further work in future.
These tests are more or less parity with the rspec-system tests, though
dependent on a few patches that still have to make it into beaker and
beaker-rspec
