[Alphanetworks] Add new platform BES2348T

[juntseng62]

Why I did it

Add the support for Alphanetworks BES2348T

How I did it

Implemented the support for platform BES2348T

Switch Vendor: Alphanetworks
HwSKU: Alphanetworks-BES2348T
ASIC Vendor: Broadcom

How to verify it

Verified the show platform commands
Attached file:
bes2348t_test_log.txt

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205

Description for the changelog

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[geans-pin]

Please provided UT

[juntseng62]

Verify with PDE PYTEST UT PRs

1. PDE migration to bullseye #10836
2. PDE migration to bullseye sonic-platform-pdk-pde#30

Test log:
bes2348t_pde_pytest_ut_log.txt

[adyeung]

/easycla

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: juntseng62 (424d736, 24adadd)

[geans-pin]

Approved~ looks good to me

[adyeung]

@prgeor pls help merge

[kannankvs]

@juntseng62 : We need to update the "Switch ASIC" column and "Port Configuration" column in the page Supported Platform page. Kindly share the "Switch ASIC" (ex : Trident,Tomahawk etc) details and "Port Configuration" for the newly added platform.

[xinliu-seattle]

@juntseng62 can you please provide which ASIC SKU it is, so that we can update the supported platform with the right information.

[juntseng62]

@kannankvs @xinliu-seattle: Platform Information show as below, Thanks.

Vendor: Alphanetworks
Platform: BES2348T
ASIC Vender: Broadcom
Switch ASIC: Trident 3.X2
Port Configuration: 48x1G+4x25G

[juntseng62]

@xinliu-seattle Please help to add Alphanetworks BES2348T to the supported platform list. Please help review it and let me know if anything is missing. Thanks.