tests: make NetworkdNetWorkTests.test_routing_policy_rule pass on CentOS

Depending on the content of /etc/iproute2/rt_dsfield, ip can print either
`0x08` or `throughput` as was shown in https://github.com/systemd/systemd/issues/10617#issuecomment-435200859.

diff --git a/test/test-network/systemd-networkd-tests.py b/test/test-network/systemd-networkd-tests.py
index a0db6eeb93aaa37e8803978420e78c0eb8cceb1e..82d10ddc43d955a4afd704810b4c53d5fbdd58e1 100755 (executable)
--- a/test/test-network/systemd-networkd-tests.py
+++ b/test/test-network/systemd-networkd-tests.py
@@ -425,7 +425,7 @@ class NetworkdNetWorkTests(unittest.TestCase, Utilities):
         print(output)
         self.assertRegex(output, '111')
         self.assertRegex(output, 'from 192.168.100.18')
-        self.assertRegex(output, 'tos 0x08')
+        self.assertRegex(output, r'tos (?:0x08|throughput)\s')
         self.assertRegex(output, 'iif test1')
         self.assertRegex(output, 'oif test1')
         self.assertRegex(output, 'lookup 7')