(#7021) Fix order dependent spec failures
Running:
rspec spec/unit/util/network_device_spec.rb spec/integration/transaction_spec.rb
Caused
Mocha::ExpectationError: unexpected invocation: #<Mock:device>.command()
The NetworkDevice class had a current reader that once set, never got
unset and lived between tests.
Paired-with: Josh Cooper <josh@puppetlabs.com>