Supress pylint warnings for undefined variables

'cmp', 'file' and 'unicode' functions are Python 2
specific.

Change-Id: I30fa091ef157453a328ab40e4186c30e5ed1b3a1
Issue-ID: INT-1427
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
diff --git a/test/vcpe/csar_parser.py b/test/vcpe/csar_parser.py
index 7046070..da6fa43 100755
--- a/test/vcpe/csar_parser.py
+++ b/test/vcpe/csar_parser.py
@@ -199,7 +199,7 @@
         self.vnf_models = []    # this version only support a single VNF in the service template
         self.vfmodule_models = []   # this version only support a single VF module in the service template
 
-        svc_template = yaml.load(file(filename, 'r'))
+        svc_template = yaml.load(file(filename, 'r')) # pylint: disable=E0602
         self.get_service_model_info(svc_template)
         self.get_vnf_and_network_model_info(svc_template)
         self.get_vfmodule_model_info(svc_template)