Created basic class outline for MongoDBShardedDeployment
Tidied imports and added milestone MongoDBShardedDeploymentIntegrationTest
Added integration test for MongoDBConfigServer and implemented MongoDBConfigServer
Implemented outline for MongoDBRouter (mongos)
Implemented launch of config servers, routers and shards
Run start effectors async
Add shards to cluster
Moved clusters into attributes, added Ec2LiveTest