[chassis] Minigraph parser changes

[arlakshm]

Why I did it

Update the minigraph parser to support chassis production minigraph

Work item tracking

• Microsoft ADO 28223907:

How I did it

Make changes the following changes in the parser to parse production minigraph for sonic T2 chassis and generate the configuration required for SONiC T2

• Support parsing of the system-ports for voq chassis from the production minigraph
• Generate the chassis level port alias for all the ports in the chassis from the minigraph
• Generate the chassis hostname in the device metadata for all the linecards from the minigraph
• Generate the voqinband interface for voq chassis.
• Update the actual port speed for linecards based on the minigraph.
• Add UT for voq and packet chassis minigraphs.

How to verify it

UT and test on sonic chassis

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

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305

Tested branch (Please provide the tested image version)

Description for the changelog

Link to config_db schema for YANG module changes

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

[arlakshm]

/azpw ms_conflict

[arlakshm]

/Azp run Azure.sonic-buildimage

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[liushilongbuaa]

/azpw ms_conflict

[lguohan]

@arlakshm , can you sync with qi and xincun on this, this would impact how ndm generate the golden config for T2.