telemetry: add FIPS-specific channel

[rail]

Previously, all official builds were reporting using the same telemetry channel.

This PR adds an new telemetry channel for the FIPS build target.

Fixes: CC-24110
Epic: DEVINF-478
Release note: None

[cockroach-teamcity]

This change is 

[knz]

thank you

[rail]

bors r=knz

[craig]

Build succeeded:

• Bazel Essential CI (Cockroach)

[blathers-crl]

Encountered an error creating backports. Some common things that can go wrong:

1. The backport branch might have already existed.
2. There was a merge conflict.
3. The backport branch contained merge commits.

You might need to create your backport manually using the backport tool.

---

error creating merge commit from 6100c55 to blathers/backport-release-22.2-99733: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

you may need to manually resolve merge conflicts with the backport tool.

Backport to branch 22.2.x failed. See errors above.

---

_{🦉 Hoot! I am a Blathers, a bot for CockroachDB. My owner is dev-inf.}

[rail]

@knz something tells me that I less care about backporting this to 22.2... What do you think?

[knz]

@knz something tells me that I less care about backporting this to 22.2... What do you think?

what's your reasoning?

[rail]

Because we treat 22.2 as an experimental branch for FIPS.

[knz]

let's ask abhinav for input. he's the consumer of the telemetry data after all.

[rail]

Sure. Let me see how bad is the conflict meanwhile.