[202211][yang]Add missing fields in PortChannel yang model (#14045) #14145
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Manual cherry-pick of #14045
Why I did it
Fixing issue #13983 Added Missing fields in sonic-portchannel yang model. "fallback" and "fast_rate" fields are present in configuration schema but not in yang model. This leads to traceback when yang is validated
sonic_yang(3):All Keys are not parsed in PORTCHANNEL dict_keys(['PortChannel100'])
sonic_yang(3):exceptionList:["'fast_rate'"]
sonic_yang(3):Data Loading Failed:All Keys are not parsed in PORTCHANNEL dict_keys(['PortChannel100'])
exceptionList:["'fast_rate'"]
Data Loading Failed
All Keys are not parsed in PORTCHANNEL
dict_keys(['PortChannel100'])
exceptionList:["'fast_rate'"]
ConfigMgmt Class creation failed
Failed to break out Port. Error: Failed to load the config. Error: ConfigMgmtDPB Class creation failed
How I did it
Updated yang model
How to verify it
Added tests to verify
Which release branch to backport (provide reason below if selected)
Description for the changelog
Ensure to add label/tag for the feature raised. example - PR#2174 under sonic-utilities repo. where, Generic Config and Update feature has been labelled as GCU.
Link to config_db schema for YANG module changes
Part of the PR
A picture of a cute animal (not mandatory but encouraged)