Added python3 support

Change-Id: I7a09d11cc6506e91327d96e06a9d1001c9567380
Issue-ID: VNFSDK-419
Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
diff --git a/tests/packager/test_utils.py b/tests/packager/test_utils.py
index 2a2d98c..7456302 100644
--- a/tests/packager/test_utils.py
+++ b/tests/packager/test_utils.py
@@ -28,7 +28,7 @@
 CERT_FILE = os.path.join(RESOURCES_DIR, 'test.crt')
 KEY_FILE  = os.path.join(RESOURCES_DIR, 'test.key')
 
-CONTENT = "needToBeHashed"
+CONTENT = b"needToBeHashed"
 SHA256 = "20a480339aa4371099f9503511dcc5a8051ce3884846678ced5611ec64bbfc9c"
 SHA512 = "dbed8672e752d51d0c7ca42050f67faf1534e58470bba96e787df5c4cf6a4f8ecf7ad45fb9307adbc5b9dec8432627d86b3eb1d3d43ee9c5e93f754ff2825320"