Add a skip for meter-label cli tests

This commit just adds a skip decorator for 2 neutron tests that don't
work in the gate either because of improper test setup or missing
devstack configuration.

Related-Bug: #1240694

Change-Id: I508aaf3dbc49c326cd54e2008f3e14935f23056e
diff --git a/tempest/cli/simple_read_only/test_neutron.py b/tempest/cli/simple_read_only/test_neutron.py
index 3c266be..9bd07d0 100644
--- a/tempest/cli/simple_read_only/test_neutron.py
+++ b/tempest/cli/simple_read_only/test_neutron.py
@@ -22,6 +22,7 @@
 
 import tempest.cli
 from tempest.openstack.common import log as logging
+from tempest import test
 
 CONF = cfg.CONF
 
@@ -67,9 +68,11 @@
     def test_neutron_floatingip_list(self):
         self.neutron('floatingip-list')
 
+    @test.skip_because(bug="1240694")
     def test_neutron_meter_label_list(self):
         self.neutron('meter-label-list')
 
+    @test.skip_because(bug="1240694")
     def test_neutron_meter_label_rule_list(self):
         self.neutron('meter-label-rule-list')