Set net peer for gRPC client

[anuraaga]

When separating out library instrumentation from auto, we removed an auto-specific workaround for setting net peer. Clients should provide the net peer in general, and gRPC does do so with an "ExperimentalApi". Going to dig for ways without that, or to find a way with the existing APIs, before requiring users to pass in the net peer themselves.

#1329 (comment)

[mateuszrzeszutek]

net.peer.* attributes are now added by GrpcNetAttributesExtractor -- peer.service was still missing though, will be added in #3357

[ralphgj]

Hi, I used agent of v1.10.0 and then I found the grpc client spans don't capture the attributes of net.peer. But in this issue, it seems being already resolved.
I use the grpc-java examples as the demo.

[trask]

hi @ralphgj, can you open a new issue for this? thx!

[ralphgj]

hi @ralphgj, can you open a new issue for this? thx!

yeah, I will do it.