copp test was broken with swap_syncd

[ysmanman]

Description

In T2 copp testing, we noticed that ptf_nn_agent was not running in rpc syncd because ptf.afpacket module was not installed in rpc syncd. Should we add the following in https://github.com/sonic-net/sonic-buildimage/blob/202205/platform/broadcom/docker-syncd-brcm-dnx-rpc/Dockerfile.j2?

mkdir ptf && cd ptf && wget https://raw.githubusercontent.com/p4lang/ptf/master/src/ptf/afpacket.py && touch __init__.py

Steps to reproduce the issue:

1. Enable swap_syncd and run copp test on T2 topo.
2. Check if ptf_nn_agent is running in rpc syncd or not.

Describe the results you received:

Describe the results you expected:

Additional information you deem important:

**Output of `show version`:**

```
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**Attach debug file `sudo generate_dump`:**

```
(paste your output here)
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[ysmanman]

Add @abdosi @arlakshm for visibility.

[ysmanman]

https://github.com/sonic-net/sonic-buildimage/pull/14503 should fix the issue.

[arlakshm]

https://github.com/sonic-net/sonic-buildimage/pull/14503 is merged. closing this issue