sallylsy

Publish PTP Yang model

5

### Change Scope * Support PTP (Precision Time Protocol) in OpenConfig. PTP model implementation is based on IEEE1588 * This change is backwards compatible ### Model ``` module: openconfig-ptp +--rw...

GNPSI description fix as per https://github.com/openconfig/public/pull/1085#issuecomment-2151142298

Add two new enums for scheduler-policy priority.

4

### Change Scope * Add two new enums for qos scheduler-policy priority. * This change is backwards compatible. ### Platform Implementations * Implementation from Dell: [Egress QoS](https://infohub.delltechnologies.com/en-us/l/dell-enterprise-sonic-quality-of-service-qos/egress-qos-flow/#:~:text=With%20a%20scheduler%20policy%2C%20the,burst%20size%20(pbs)%20parameters.) * Implementation from...