Take the new base finder code, wrap it in
a thin wrapper and use it in place of the
previous way of finding base snapshots
This solution is not focused on efficiency
as it does result in looking up backup
models multiple times. It's more to get the
new way of finding bases out and then we
can go back and smooth things over when
we have the chance
---
#### Does this PR need a docs update or release note?
- [x] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [ ] ⛔ No
#### Type of change
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
#### Issue(s)
* #3202
#### Test Plan
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [x] 💚 E2E
Add a new set of functions to find
bases for incremental backups. The
new set of functions return
* set of backup models and the reasons for selecting each
* set of snapshots to merge and the reasons for selecting each
* set of snapshots for kopia-assisted incrementals and reasons for selecting each
New code is not wired into existing
system so no behavioral changes are
expected
---
#### 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
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
#### Issue(s)
* #3202
#### Test Plan
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
