chore: remove sqlstore & mockstore dependencies from (most) packages (#57087)

* chore: add alias for InitTestDB and Session

Adds an alias for the sqlstore InitTestDB and Session, and updates tests using these to reduce dependencies on the sqlstore.Store.

* next pass of removing sqlstore imports
* last little bit
* remove mockstore where possible

pkg/infra/serverlock/serverlock_test.go

@@ -8,15 +8,15 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	"github.com/grafana/grafana/pkg/infra/db"
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/infra/tracing"
-	"github.com/grafana/grafana/pkg/services/sqlstore"
 )
 
 func createTestableServerLock(t *testing.T) *ServerLockService {
 	t.Helper()
 
-	store := sqlstore.InitTestDB(t)
+	store := db.InitTestDB(t)
 
 	return &ServerLockService{
 		SQLStore: store,
@@ -105,7 +105,7 @@ func TestLockAndRelease(t *testing.T) {
 		}
 
 		// inserting a row with lock in the past
-		err := sl.SQLStore.WithTransactionalDbSession(context.Background(), func(sess *sqlstore.DBSession) error {
+		err := sl.SQLStore.WithTransactionalDbSession(context.Background(), func(sess *db.Session) error {
 			r, err := sess.Insert(lock)
 			require.NoError(t, err)
 			require.Equal(t, int64(1), r)
@@ -118,7 +118,7 @@ func TestLockAndRelease(t *testing.T) {
 		require.NoError(t, err)
 
 		//validate that the lock LastExecution was updated (at least different from the original)
-		err = sl.SQLStore.WithTransactionalDbSession(context.Background(), func(sess *sqlstore.DBSession) error {
+		err = sl.SQLStore.WithTransactionalDbSession(context.Background(), func(sess *db.Session) error {
 			lockRows := []*serverLock{}
 			err := sess.Where("operation_uid = ?", operationUID).Find(&lockRows)
 			require.NoError(t, err)