Description of PR

Summary:
This PR is to fix Python3 syntax issue in test_custom_acl_table.py.
The error message is

if "dualtor" in tbinfo["topo"]["name"]:
>           vlan_name = mg_facts['minigraph_vlans'].keys()[0]
E           TypeError: 'dict_keys' object is not subscriptable

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Back port request

• 201911
• 202012
• 202205
• 202305

Approach

What is the motivation for this PR?

This PR is to fix Python3 syntax issue in test_custom_acl_table.py.

How did you do it?

Convert the keys to list explicitly.

How did you verify/test it?

Verified by syntax check.

Any platform specific information?

No.

Supported testbed topology if it's a new test case?

This change is dualtor specific.

Documentation