Adds api calls to get the max or sum volume for a specific
project.
Moves the logic for deciding when to skip a test that needs the
Mongo map-reduce feature into a new test db module.
Adds TestConnection class to avoid recreating the underlying
Database object when using mim. This is necessary because
spidermonkey can only create a limited number of instances per
process.
Change-Id: Idefc01978e41ec823533b7dbb164319a916b155c
Signed-off-by: Steven Berler <steven.berler@dreamhost.com>