tests: skip hoststack iperf3 cut thru test on aarch64

- Temporary fix for intermittent unrelated test failure
  on AARCH64 CI verify/merge jobs.  To be reverted
  when the root cause is fixed.

Type: test

Change-Id: Ie28e5a7b9fa9a20469ac7e91766f4c226e44d244
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

test/test_vcl.py

@@ -6,7 +6,7 @@ import os
 import subprocess
 import signal
 from framework import VppTestCase, VppTestRunner, running_extended_tests, \
-    Worker
+    Worker, is_platform_aarch64
 from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath, FibPathProto
 
 iperf3 = '/usr/bin/iperf3'
@@ -291,6 +291,8 @@ class LDPCutThruTestCase(VCLTestCase):
                            "sock_test_client", self.client_echo_test_args)
 
     @unittest.skipUnless(_have_iperf3, "'%s' not found, Skipping.")
+    @unittest.skipIf(is_platform_aarch64,
+                     "intermittently fails on AARCH64 CI jobs")
     def test_ldp_cut_thru_iperf3(self):
         """ run LDP cut thru iperf3 test """