Improved waiting for machine to be ready mechanism. (#231)
Added modules for redis and wget (needed for OpenCV installer script). (#231)
Added module for repo dependencies. (#231)
Added role for session store. (#231)
Added cruncher role. (#231)
Added crunch_01 node definition. (#231)
Merged with upstream master. (#231)
Merge pull request #233 from aismail/f/#231-provision-crunch-node

F/#231 provision crunch node