using limit: 1 on DescribeStream will always return 1 shard no matter how many shards there actually are when we call `len()`. so i've removed the limit parameter to get the actual shard list returned
remove limits
An attempt to converge the tests into a standard naming scheme
- TestAccAWS for aws tests
- a `_basic` test for each suite, save a few that are quick (Network ACLs, for
example)