adding a working stress client that uses the python driver
adding sindex creation to stress workload script
quieter stress clients on errors
adding some more useful output to stress client (still needs some work)
adding progress for stress test startup
added error aggregation to the python stress client
fixing python stress client to handle queries that last longer than 1s
adding more useful printouts to the python stress client
Do not clean protoc-js when building the dsc

Review 625 by @wmrowan
mem_fix
Merge branch 'next' into atnnn/osx