[c++ grpc] Add Bond-over-gRPC AppVeyor support
[c++ grpc] Add Bond-over-gRPC AppVeyor support

* Install yasm
* Handle CMake stderr output
* For minor performance improvement, only clone submodules with a depth of 5
chwarr/bond,chwarr/bond,chwarr/bond,Microsoft/bond,Microsoft/bond,Microsoft/bond,tstein/bond,chwarr/bond,jdubrule/bond,tstein/bond,tstein/bond,sapek/bond,sapek/bond,sapek/bond,jdubrule/bond,Microsoft/bond,gencer/bond,sapek/bond,Microsoft/bond,gencer/bond,chwarr/bond,gencer/bond,jdubrule/bond,Microsoft/bond,gencer/bond,jdubrule/bond,tstein/bond,chwarr/bond,tstein/bond,sapek/bond,jdubrule/bond,sapek/bond,jdubrule/bond,tstein/bond,gencer/bond