~This tries to export all the backup that is available in the logevity test repo. This should warn us in case we are not able to export any older versions.~ Had a discussion and decided it would be better to export just two items and thought we could start with trying to export the first and the last item.
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#### Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No
#### Type of change
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- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
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- [ ] 🧹 Tech Debt/Cleanup
#### Issue(s)
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* closes https://github.com/alcionai/corso/issues/3920
#### Test Plan
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centralizes the ci action for slack messages, and adds slack messages for per-resource cleanup failures.
---
#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🤖 Supportability/Tests
#### Issues
- #3503
<!-- PR description-->
Longevity Test- Delete the backups older than n no of days. Currently n's value is 5.
---
#### Does this PR need a docs update or release note?
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#### Type of change
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- [ ] 🤖 Supportability/Tests
#### Issue(s)
<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* https://github.com/alcionai/corso/issues/3679
#### Test Plan
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- [x] ⚡ Unit test
<!-- PR description-->
Longevity test to run backup and send notification of test failure
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
<!--- Please check the type of change your PR introduces: --->
- [ ] 🤖 Supportability/Tests
#### Issue(s)
<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* https://github.com/alcionai/corso/issues/3679
#### Test Plan
<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E
