Verify the list of stats keys is complete

    * Checks the list of stats keys returned from the HTTP endpoint
    is complete -- delineating between riak and riak_ee
    * Modifies reset-current-env to properly clean dependencies when a
    full clean is requested
    * Adds logging to verify_riak_stats to explain the addition steps
    being performed
    * Adds rt:product/1 to determine whether a node is running riak
    or riak_ee