[tests/crm] Fix python3 syntax error in test_acl_entry

[lizhijianrd]

Description of PR

Summary:
Testcase crm/test_crm.py::test_acl_entry hit below error in Python3 env:

    def test_acl_entry(duthosts, enum_rand_one_per_hwsku_frontend_hostname, enum_frontend_asic_index, collector, tbinfo):
        duthost = duthosts[enum_rand_one_per_hwsku_frontend_hostname]
        asichost = duthost.asic_instance(enum_frontend_asic_index)
        asic_collector = collector[asichost.asic_index]

        if duthost.facts["asic_type"] == "marvell":
            # Remove DATA ACL Table and add it again with ports in same port group
            mg_facts = duthost.get_extended_minigraph_facts(tbinfo)
            tmp_ports = mg_facts["minigraph_ports"].keys()
>           tmp_ports.sort(key=lambda x: int(x[8:]))
E           AttributeError: 'dict_keys' object has no attribute 'sort'

The root cause is, in python2 dict.keys() returns a list object, but in python3 it returns a dict_keys object which is not sortable.

Use sorted() function instead of dict.keys().sort(). sorted() function can put the keys of a dict in a list in sorted order, and it has same action in Python2 and Python3.

Type of change

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

Back port request

• 201911
• 202012
• 202205

Approach

What is the motivation for this PR?

Fix a python3 syntax error in testcase crm/test_crm.py::test_acl_entry.

How did you do it?

Use sorted() function instead of dict.keys().sort(). sorted() function can put the keys of a dict in a list in sorted order, and it has same action in Python2 and Python3.

How did you verify/test it?

Verified by running testcase on Marvell testbed.

Any platform specific information?

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

Documentation

[mssonicbld]

Cherry-pick PR to 202305: #9338