Chore: Update test database initialization (#81673)

* streamline initialization of test databases, support on-disk sqlite test db

* clean up test databases

* introduce testsuite helper

* use testsuite everywhere we use a test db

* update documentation

* improve error handling

* disable entity integration test until we can figure out locking error

pkg/services/annotations/annotationsimpl/annotations_test.go

@@ -29,8 +29,13 @@ import (
 	"github.com/grafana/grafana/pkg/services/tag/tagimpl"
 	"github.com/grafana/grafana/pkg/services/user"
 	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tests/testsuite"
 )
 
+func TestMain(m *testing.M) {
+	testsuite.Run(m)
+}
+
 func TestIntegrationAnnotationListingWithRBAC(t *testing.T) {
 	if testing.Short() {
 		t.Skip("skipping integration test")

pkg/services/annotations/annotationsimpl/loki/historian_store_test.go

@@ -27,11 +27,16 @@ import (
 	"github.com/grafana/grafana/pkg/services/ngalert/state/historian"
 	historymodel "github.com/grafana/grafana/pkg/services/ngalert/state/historian/model"
 	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tests/testsuite"
 	"github.com/prometheus/client_golang/prometheus"
 
 	"github.com/stretchr/testify/require"
 )
 
+func TestMain(m *testing.M) {
+	testsuite.Run(m)
+}
+
 func TestIntegrationAlertStateHistoryStore(t *testing.T) {
 	if testing.Short() {
 		t.Skip("skipping integration test")