TODO:
1. Update Documentation/contributor-guide/modules.svg;
2. Update bill-of-materials.json when raft and raftexample are removed in future;
Signed-off-by: Benjamin Wang <wachao@vmware.com>
They used to take >10min with coverage, so were causing interrupted
Travis runs.
Know thay fit in 100-150s (together), thanks also to parallel
execution.
Jintao Zhang