dev/build-tracker: tweak messages
Created by: bobheadxi
Tries to improve the readabilty of the messages a bit, so that we have the following info in the following structure:
- Build number
- What changed in the build (commit message)
- What went wrong
With the important business out of the way, then we have:
- Additional context (author, pipeline)
- Actions (buttons)
Afterwards we have miscellaneous content - this is where the need for dividers comes in, I think the above doesn't really need dividers yet:
- Divider
- Info on flakes
Also updates the test instructions
Test plan
go test . -RunIntegrationTest