Add a script for batch provisioning of SecurityMonkey role

A simple boto-based script to automate role provisioning.
Optionally accept profile_name as CLI argument when multiple
credemtials are available. Closes #34.

Signed-off-by: Luca Bruno <luca.bruno@rocket-internet.de>
Merge pull request #45 from lucab/lucab/to-upstream/role-provisioning

Add a script for batch provisioning of SecurityMonkey role