…sonic-net#848)

Cherry pick sonic-net#20766 to 202503 branch.

After ansible >= 2.14, custom modules are executed on the managed node
(or in an execution environment container) that only contains the
runtime bits Ansible intentionally ships there (mainly
ansible.module_utils plus Python stdlib). Controller‑only internals like
ansible.inventory.manager and ansible.parsing.dataloader are not
present. So importing them on the remote side is fundamentally
unsupported now.

This change removed the code of importing ansible API in the
testbed_vm_info.py customized module. Then this module can be executed
in sonic-mgmt docker using ansible >= 2.14.

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### Description of PR
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Summary:
Fixes NOS-2409 (Add copp stats show command support).

### Type of change
mgmt tests for show copp stats - using pre-existing SAI api calls to get
policer stats per trap group and verifying it.

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- [ ] Bug fix
- [ ] Testbed and Framework(new/improvement)
- [x] New Test case
    - [x] Skipped for non-supported platforms
- [ ] Test case improvement


### Back port request
- [ ] 202505
- [ ] 202511

### Approach
#### What is the motivation for this PR?
The tests are added as part of the feature commit for NOS-2409 which
adds support to show policer stats per trap group. This leverages
existing `sai_get_policer_stats` API to get statistics for red, green
and yellow packets.

The PRs for reference [sonic-buildimage
sonic-net#2831](nexthop-ai/private-sonic-buildimage#2831)
, [sonic-swss sonic-net#277
](nexthop-ai/private-sonic-swss#277) and
[sonic-utilities sonic-net#217
](https://github.com/nexthop-ai/private-sonic-utilities/pull/217/changes)

#### How did you do it?
The tests are for one vs multi asic, testing with traffic for copp stats
increments in green, yellow and red packets.

#### How did you verify/test it?
Unit tests have been added and verified, these are sonic-mgmt tests to
be run.

Sonic-mgmt tests were verified on xgs platforms, dnx platforms to be
skipped.

#### Any platform specific information?
NA

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

### Documentation
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