## Description
Disable the kopia retention policy that it uses by default. All snapshot deletions in corso must be done manually.
There should really be a follow up change to this after making a method in kopia public. Right now this PR is going off [some code](7bda16ab33/snapshot/policy/retention_policy.go (L117)) that shows the effective number of "latest" snapshots will default to intMAX if all of the other fields are set. We really should have a regression test or something for this to ensure that's actually the case. I've manually tested this patch, but that's not a scalable solution
## Type of change
<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor
## Issue(s)
* closes#889
## Test Plan
<!-- How will this be tested prior to merging.-->
- [x] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
swaps the corso go module from github.com/
alcionai/corso to github.com/alcionai/corso/src
to align with the location of the go.mod and
go.sum files inside the repo.
All other changes in the repository update the
package imports to the new module path.
* Skip updating policy if no changes needed
* Set default compressor on repo connection and initialization
* Factor out common code for connecting to a repo
* New unit test ensuring compressor is set properly
Test compressor is set both through Initialize and Connect because
client code doesn't have to call Connect if it just did Initialize.
* Function that allows adjusting global compression
Takes the name of a kopia compressor and sets the default compressor to
be that in the repo.
* Basic unit tests for setting compression
Ensures that the policy is actually applied to future snapshots that
kopia will take.
* Integration test for changing compression types
Make sure that data is still available even if the global compression
policy changes from what it was when the backup was made.
* Turn on revive linter, ignore only a few things
* Fix lint errors
Ignore shadowing of 'suite' in tests for now. Also move some constants
that had the same value to tester.
The alias of testing to ctesting prevented auto-importing
of the testing library. This change (arbitrarily) renames
the package so that it doesn't collide with the core pkg
for "testing".
* Split KopiaWrapper into repo handle and logic
With ModelStore, multiple structs need a reference to the kopia repo.
Make a small wrapper class (conn) that can open and initialize a repo. The
wrapper handles concurrent closes and opens and does ref counting to
ensure it only drops the kopia handle when the last reference is closed.
Rename KopiaWrapper to Wrapper and keep backup/restore functionality
in it.
