xcvrd keep on crashing with latest master image 484 on 7050cx3 platform

[yxieca]

Description

Steps to reproduce the issue:

1. Install master image 484 on 7050cx3 platform

Describe the results you received:
pmon keep on crashing:

Nov 11 23:08:02.670333 str2-7050cx3-acs-07 INFO pmon#supervisord: xcvrd Traceback (most recent call last):
Nov 11 23:08:02.670477 str2-7050cx3-acs-07 INFO pmon#supervisord: xcvrd File "/usr/local/bin/xcvrd", line 5, in
Nov 11 23:08:02.670477 str2-7050cx3-acs-07 INFO pmon#supervisord: xcvrd from src.xcvrd import main
Nov 11 23:08:02.670552 str2-7050cx3-acs-07 INFO pmon#supervisord: xcvrd ImportError: No module named src.xcvrd

Describe the results you expected:
System boots up and healthy

Additional information you deem important (e.g. issue happens only occasionally):

**Output of `show version`:**

```

SONiC Software Version: SONiC.master.484-b5cfc025
Distribution: Debian 10.6
Kernel: 4.19.0-9-2-amd64
Build commit: b5cfc02
Build date: Wed Nov 11 18:18:57 UTC 2020
Built by: johnar@jenkins-worker-6

Platform: x86_64-arista_7050cx3_32s
HwSKU: Arista-7050CX3-32S-C32
ASIC: broadcom
Serial Number: JPW20281078
Uptime: 23:59:02 up 29 min, 1 user, load average: 3.10, 2.85, 2.08
```

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

```
(paste your output here)
```

[lguohan]

@vdahiya12 , can you identify which pr cause the regression?