[7.x](backport #26728) Skip flaky test: filestream and harvester group

[mergify]

This is an automatic backport of pull request #26728 done by Mergify.

---

Mergify commands and options

More conditions and actions can be found in the documentation.

You can also trigger Mergify actions by commenting on this pull request:

• @Mergifyio refresh will re-evaluate the rules
• @Mergifyio rebase will rebase this PR on its base branch
• @Mergifyio update will merge the base branch into this PR
• @Mergifyio backport <destination> will backport this PR on <destination> branch

Additionally, on Mergify dashboard you can:

• look at your merge queues
• generate the Mergify configuration with the config editor.

Finally, you can contact us on https://mergify.io/

[botelastic]

This pull request doesn't have a Team:<team> label.

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2021-07-15T07:13:44.466+0000

• Duration: 94 min 46 sec

• Commit: f859ff7

Test stats 🧪

Test	Results
Failed	0
Passed	14182
Skipped	2327
Total	16509

Trends 🧪

💚 Flaky test report

Tests succeeded.

Expand to view the summary

Test stats 🧪

Test	Results
Failed	0
Passed	14182
Skipped	2327
Total	16509

[kaiyan-sheng]

Merging it because it's blocking #27077

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b mergify/bp/7.x/pr-26728 upstream/mergify/bp/7.x/pr-26728
git merge upstream/7.x
git push upstream mergify/bp/7.x/pr-26728