Split some CI tests for OneDrive into nightly and regular CI (#2907)

Try to reduce the overall number of tests run during
regular CI by splitting most of the OneDrive
RestoreAndBackup tests into a new "nightly" test suite.
Regular CI will now only run against the latest backup
version to make sure nothing immediate broke

This should only be merged once we have a GitHub action
for nightly tests and some way of reporting the outcome
of the action

---

#### 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

- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [x] 🤖 Supportability/Tests
- [x] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup

#### Issue(s)

* closes #2756

#### Test Plan

- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

src/internal/tester/suite.go

@@ -12,9 +12,10 @@ import (
 
 // Flags for declaring which scope of tests to run.
 const (
-	CorsoCITests   = "CORSO_CI_TESTS"
-	CorsoE2ETests  = "CORSO_E2E_TESTS"
-	CorsoLoadTests = "CORSO_LOAD_TESTS"
+	CorsoCITests      = "CORSO_CI_TESTS"
+	CorsoE2ETests     = "CORSO_E2E_TESTS"
+	CorsoLoadTests    = "CORSO_LOAD_TESTS"
+	CorsoNightlyTests = "CORSO_NIGHTLY_TESTS"
 )
 
 type Suite interface {
@@ -112,6 +113,32 @@ type loadSuite struct {
 	suite.Suite
 }
 
+// ---------------------------------------------------------------------------
+// Nightly
+// ---------------------------------------------------------------------------
+
+func NewNightlySuite(
+	t *testing.T,
+	envSets [][]string,
+	runOnAnyEnv ...string,
+) *nightlySuite {
+	RunOnAny(
+		t,
+		append(
+			[]string{CorsoNightlyTests},
+			runOnAnyEnv...,
+		)...,
+	)
+
+	MustGetEnvSets(t, envSets...)
+
+	return new(nightlySuite)
+}
+
+type nightlySuite struct {
+	suite.Suite
+}
+
 // ---------------------------------------------------------------------------
 // Run Condition Checkers
 // ---------------------------------------------------------------------------

src/internal/tester/suite_test.go

@@ -72,6 +72,23 @@ func (suite *TesterLoadSuite) SetupSuite() {
 	suite.called = true
 }
 
-func (suite *TesterLoadSuite) TestE2ESuite() {
+func (suite *TesterLoadSuite) TestLoadSuite() {
+	require.True(suite.T(), suite.called)
+}
+
+type TesterNightlySuite struct {
+	tester.Suite
+	called bool
+}
+
+func TestTesterNightlySuite(t *testing.T) {
+	suite.Run(t, &TesterNightlySuite{Suite: tester.NewNightlySuite(t, nil)})
+}
+
+func (suite *TesterNightlySuite) SetupSuite() {
+	suite.called = true
+}
+
+func (suite *TesterNightlySuite) TestNightlySuite() {
 	require.True(suite.T(), suite.called)
 }