Add version check

Author: daall

tests/common/devices.py

@@ -544,6 +544,16 @@ def check_bgp_session_nsf(self, neighbor_ip):
                 return True
         return False
 
+    def get_version(self):
+        """
+            Gets the SONiC version this device is running.
+
+            Returns:
+                str: the firmware version number (e.g. 20181130.31)
+        """
+        output = dut.command("sonic-cfggen -y /etc/sonic/sonic_version.yml -v build_version")
+        return output["stdout_lines"][0].strip()
+
 class EosHost(AnsibleHostBase):
     """
     @summary: Class for Eos switch

tests/copp/test_copp.py

@@ -60,7 +60,9 @@ def test_policer(self, protocol, duthost, ptfhost, _copp_testbed):
             that have a set rate limit.
         """
 
-        if protocol == "ARP" and is_broadcom_device(duthost):
+        if protocol == "ARP" \
+                and is_broadcom_device(duthost) \
+                and "201811" not in duthost.get_version():
             pytest.xfail("ARP policy disabled on BRCM devices due to SAI bug")
 
         if protocol in ["IP2ME", "SNMP", "SSH"] and _copp_testbed.topo == "t1-lag":