Send Lustre version as part of server component mount message.

[hayleigh-dot-dev]

The transport format for server component messages is an internal implementation detail that is liable to change between minor or even patch releases. Depending on how a client is built or deployed, it's possible for a server to be running a version of lustre that doesn't match the server component client runtime being communicated with.

For obvious reasons this can lead to unpredictable and often broken results. We should include the lustre version of the running server in the mount message and the client should check this against the version of lustre that built the runtime. If they mismatch an error should be logged in the console and perhaps reported on the server too.

[yoshi-monster]

I think we could either enforce that the versions match up exactly, or add our own "wire-format version" constant that we'd have to remember to bump manually. Since right now we don't really support building the server runtime as part of the client the former seems easier to maintain?

[hayleigh-dot-dev]

Yeah that's what I'm thinking, maintenance burden of anything more sophisticated would be too high for now.