VOL-2017 eliminate common dir and move its contents up a level

Change-Id: Ia52dac284a7edcdcfe7eaa8c568b84d19d604b58
diff --git a/pkg/db/model/persisted_revision.go b/pkg/db/model/persisted_revision.go
index fa1a97e..c644e14 100644
--- a/pkg/db/model/persisted_revision.go
+++ b/pkg/db/model/persisted_revision.go
@@ -22,8 +22,8 @@
 	"context"
 	"github.com/golang/protobuf/proto"
 	"github.com/google/uuid"
-	"github.com/opencord/voltha-lib-go/pkg/common/log"
 	"github.com/opencord/voltha-lib-go/pkg/db/kvstore"
+	"github.com/opencord/voltha-lib-go/pkg/log"
 	"reflect"
 	"strings"
 	"sync"