Update script to make script test_mux_port_iptables_entries pass (sonic-net#18798)

Add Mellanox-SN4700-V64 into mellanox_dualtor_hwskus
Update key sonic_hwsku for parameter host_vars

Author: echuawu

ansible/group_vars/sonic/variables

@@ -26,7 +26,7 @@ mellanox_spc4_hwskus: [ 'ACS-SN5600' , 'Mellanox-SN5600-V256', 'Mellanox-SN5600-
                         'Mellanox-SN5610N-C256S2', 'Mellanox-SN5610N-C224O8']
 mellanox_spc5_hwskus: [ 'Mellanox-SN5640-C512S2', 'Mellanox-SN5640-C448O16']
 mellanox_hwskus: "{{ mellanox_spc1_hwskus + mellanox_spc2_hwskus + mellanox_spc3_hwskus + mellanox_spc4_hwskus + mellanox_spc5_hwskus }}"
-mellanox_dualtor_hwskus: [ 'Mellanox-SN4600C-C64' ]
+mellanox_dualtor_hwskus: [ 'Mellanox-SN4600C-C64', 'Mellanox-SN4700-V64' ]
 
 cavium_hwskus: [ "AS7512", "XP-SIM" ]
 

ansible/library/dual_tor_facts.py

@@ -42,7 +42,10 @@ def parse_neighbor_tor(self):
         neighbor['hostname'] = [
             dut for dut in self.testbed_facts['duts'] if dut != self.hostname][0]
         neighbor['ip'] = self.host_vars[neighbor['hostname']]['ansible_host']
-        neighbor['hwsku'] = self.host_vars[neighbor['hostname']]['hwsku']
+        if 'hwsku' in self.host_vars[neighbor['hostname']]:
+            neighbor['hwsku'] = self.host_vars[neighbor['hostname']]['hwsku']
+        else:
+            neighbor['hwsku'] = self.host_vars[neighbor['hostname']]['sonic_hwsku']
 
         self.dual_tor_facts['neighbor'] = neighbor