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

Change-Id: Ia52dac284a7edcdcfe7eaa8c568b84d19d604b58
diff --git a/pkg/db/model/backend.go b/pkg/db/model/backend.go
index de731ad..fb2c813 100644
--- a/pkg/db/model/backend.go
+++ b/pkg/db/model/backend.go
@@ -19,8 +19,8 @@
 import (
 	"errors"
 	"fmt"
-	"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"
 	"strconv"
 	"sync"
 	"time"