fix boto >= 2.34

ref: https://github.com/boto/boto/commit/e57b7fc31ae237df5439459d602651ed3cc10557?diff=split

This removes the workaround for boto counting 0,1,2,4 fixed in 2.34
ensure boto version >=2.34.0 for upcoming changes from @aeronotix
Merge pull request #56 from WrathOfChris/cm-fix-boto-2-34

fix boto >= 2.34