Testcases about snaps failed due to the absence of attribute 'logger'.
Change-Id: I78c85e51f63afa767fa73aa12faea066ad432371
Signed-off-by: Linda Wang <wangwulin@huawei.com>
     def __init__(self, **kwargs):
         super(PyTestSuiteRunner, self).__init__(**kwargs)
         self.suite = None
+        self.logger = None
 
     def run(self, **kwargs):
         """
 
 #
 # http://www.apache.org/licenses/LICENSE-2.0
 
+import logging
+
 from functest.core.pytest_suite_runner import PyTestSuiteRunner
 from functest.opnfv_tests.openstack.snaps import snaps_utils
 from functest.utils import functest_utils
     """
     def __init__(self, **kwargs):
         super(SnapsTestRunner, self).__init__(**kwargs)
+        self.logger = logging.getLogger(__name__)
 
         self.os_creds = openstack_tests.get_credentials(
             os_env_file=CONST.__getattribute__('openstack_creds'),