Bug: sonic-yang-mgmt uses clause evaluation ignores leaf-list and refine

[bradh352]

Is it platform specific

generic

Importance or Severity

Critical

Description of the bug

Any yang model which has a leaf-list inside a grouping (thus referenced by a uses clause), or when the refine clause is specified with a uses is not properly recognized.

The most obvious way this can be seen is when trying to use a route map within bgp which will cause a yang validation failure due to it ignoring the leaf-list.

The sonic-yang-mgmt code needs to be refactored to fully support uses clause evaluation.

Steps to Reproduce

Having route maps in BGP NEIGHBORS will fail yang validation

"BGP_NEIGHBOR_AF": {
    "default|192.168.1.1|ipv4_unicast": {
        "route_map_in": [ "map1" ],
        "route_map_out": [ "map1" ]
    }
}

Actual Behavior and Expected Behavior

yang validation should succeed.

Relevant log output

Output of show version, show techsupport

Attach files (if any)

Implementation

• sonic-yang-mgmt: uses clause with leaf-list, choice not honored #21907
• YANG: remove uses clause handling, now part of sonic-yang-mgmt sonic-utilities#3814

[prgeor]

@qiluo-msft can you help assign reviewer for this PR?