tests: tag the tests that do not work with multi-worker configuration

If the multi-worker default VPP configuration is triggered by
setting VPP_WORKER_CONFIG="workers 2", some of the tests fail
for various reasons.

It's a substantial number, so this change marks all of the
testsets that have this issue, such that they can be addressed
later independently.

Type: test
Change-Id: I4f77196499edef3300afe7eabef9cbff91f794d3
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>

test/test_stats_client.py

@@ -4,9 +4,11 @@ import unittest
 import psutil
 from vpp_papi.vpp_stats import VPPStats
 
+from framework import tag_fixme_vpp_workers
 from framework import VppTestCase, VppTestRunner
 
 
+@tag_fixme_vpp_workers
 class StatsClientTestCase(VppTestCase):
     """Test Stats Client"""