Add 32bit OS support to OpenJDK
Add 32bit OS support to OpenJDK

I tested this change with the `trusty32` Vagrant box. It correctly
resolves `ansible_architecture` to `amd64` when it is `x86_64`, and the
value of `ansible_architecture` otherwise.

Resolves #7

azavea/ansible-java,flibbertigibbet/ansible-java