[Chapel Merge] Abort the perf playgrounds if git operations fail

Branch: refs/heads/main
Revision: 852f4462417a489f88a120d385be1afe27f328ba
Author: jabraham17
Link: Abort the perf playgrounds if git operations fail by jabraham17 · Pull Request #26804 · chapel-lang/chapel · GitHub
Log Message:
Abort the perf playgrounds if git operations fail (#26804)

Aborts the perf playgrounds if any of the git operations to apply an
external branch fail

[Reviewed by @arifthpe]

Compare: Comparing b091059e9b3b6d2c6bb4feabe90b3c9804174568...19b8ef962a51d268851572f9dff397e3dd21f2eb · chapel-lang/chapel · GitHub

Diff:
A util/cron/common-playground.bash
M util/cron/test-perf.chapcs.playground.bash
M util/cron/test-perf.hpe-apollo-hdr.gasnet-ibv.playground.bash
https://github.com/chapel-lang/chapel/pull/26804.diff