Fixed import in shell

Related-Bug: #1570260
Change-Id: I4a3e8f3b97c363d9faf22d655895bc0e523ca7f9
diff --git a/trsync/utils/shell.py b/trsync/utils/shell.py
index ca45805..79a4f8b 100644
--- a/trsync/utils/shell.py
+++ b/trsync/utils/shell.py
@@ -16,7 +16,7 @@
 
 
 import subprocess
-import utils
+from trsync.utils import utils as utils
 
 
 class Shell(object):