The docs on metric labels suggests that they should probably be strings,
and all others I can find are strings, and so these ought to be also.
Otherwise, some of the exporters/processors have to handle things
specifically, and not all of these come out as nice as could be when you
`str()` them.
I've also made sure to use the `StatusCode` name, as that's the
interesting thing.
Finally, there's no need to report specifically that `error=false`, so
I've removed that tag.
* when running the grpc tests with pytest or eachdist from the command
line the 2nd test trying to connect to the test server failed with
a connection refused message.
Seems like the connection from the previous test was still alive due to
the channel not being properly closed.
Alex Boten
Owais Lone
Ryan, Siu Long Wa
Seng Jea Lee
Mihir Gore
Srikanth Chekuri
Leighton Chen
Michael Stella
Diego Hurtado
Mario Jonke