This commit implements the missing arguments for get_all_logs.
It introduces two slight API changes. They're the right thing to do, but I can revert those parts if needed.
a) dbinstance_id is no longer optional. It's a required field in the docs, so there's no reason for it to be optional.
b) max_records was previously hardcoded to 26. It's actually an optional field, so I've changed to be so.
Finished implementation of RDS's DescribeDBLogFiles
BTW, thanks for all of your contributions recently @pasc. We really appreciate it!
@garnaat : You're welcome!!
Looks great, thanks!