Feature/reduce gem size

[frezbo]

This tries to reduce the gem dependencies to only what is being used.

[k1LoW]

Hi @frezbo Thank you for you commit!!

I have one question. Why do you want to reduse the gem dependencies ?

I think it's more important to be easier when someone adds a new resource than the size of the gem.

[frezbo]

@k1LoW Yes I agree to the ease of adding a new gem, but the existing code also means that any gem project depending on awspec also gets all the unwanted aws dependencies. I will leave it up to the authors on the final decision. I'm still ok keeping all considering supporting new resources.

[k1LoW]

@frezbo Thank you !