chore(ci): add retry to the run test step for circleci [backport 2.17] (

#11515)

Backport 6916049 from #11368 to 2.17.

Some CircleCI tests are flaky, which causes merge queue times to be long
if the PR gets ejected for flakes. This will hopefully help remedy this
symptom. Flakes should still be recorded since the same test will fail
on the same commit, it just won't be a hard blocker if a retry will make
the test pass.

## Checklist
- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

## Reviewer Checklist
- [x] Reviewer has checked that all the criteria below are met 
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
- Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

Co-authored-by: erikayasuda <153395705+erikayasuda@users.noreply.github.com>

.circleci/config.templ.yml

@@ -188,6 +188,7 @@ commands:
                   RIOT_RUN_RECOMPILE_REQS: "<< pipeline.parameters.riot_run_latest >>"
                   DD_CIVISIBILITY_AGENTLESS_ENABLED: true
                 no_output_timeout: 5m
+                attempts: 2
                 command: |
                   ulimit -c unlimited
                   ./scripts/run-test-suite '<<parameters.pattern>>' <<pipeline.parameters.coverage>> 1