Use lldp0/lldp1 instead of lldp, since container lldp was removed from the host

[mannytaheri]

Description of PR

test_lldp_neighbor testcase fails since container lldp was removed form the host

admin@ixre-board7:~$ docker exec -i lldp lldpcli show chassis Error response from daemon: No such container: lldp

for this reason, we will test either lldp0 or lldp1 based on randomly selected Asic.

Summary: Fixes # (issue)

Type of change

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

Back port request

• [ ] 201911
• [ ] 202012
• [ ] 202205
• [ ] 202305
• [ ] 202311

Approach

What is the motivation for this PR?

since container lldp was removed from the host, we will test on lldp0 or lldp1 to test the test_lldp_neighbor testcase.

How did you do it?

Use enum_rand_one_frontend_asic_index to randomly select an Asic index Use the Asic index to select either lldp0 or lldp1

How did you verify/test it?

Tested on a multi cards multi Asics chassis.

Any platform specific information?

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

Documentation