SAI 1.11.0 Release Notes

[kannankvs]

Signed-off-by: kannankvs kannan_kvs@dell.com

Initial draft on SAI 1.11.0 Release notes

[kannankvs]

@rlhui Request to kindly review and approve

[rlhui]

Can we add the below list in beginning of doc, as list of enhancements added in this release:

SAI GPE header files (#1585)
SAI Generic Programmable Extensions proposal (#1551)
Allow for CREATE_ONLY attributes in non objects (#1616)

Bulk API for setting Port Attributes (#1460)
Bulk API support for Neighbor entries (#1504)
Add bulk create and remove for tunnel (#1462)

Add hostif traps for p4runtime and gNMI protocols (#1436)
Add hostif trap for NTP (#1453)
ECMP Member Capability and Configuration (#1461)
Add DONOTDROP packet action. (#1349)
Support counters on IP MC route entries. (#1497)
Tunnel UDP SRC PORT security (#1455)

saiport: add support for link training ability query (#1434)
Add port FEC histogram counter support. (#1617)
Add fabric port isolation attribute (#1498)
Add switch api for clause 22 mdio access (#1507)

Update saitam.h (#1496)
Distributed HW resource management infrastructure (#1528)

Changes for supporting some PHY Diagnostics (#1527)

SAI metadata enhancements
[meta] Add enum for global apis (#1456)
[meta] Add test to verify if vendor implemented all global apis (#1542)
[meta] Disable doxygen TCL_SUBST and COLS_IN_ALPHA_INDEX (#1457)
[meta] Add sai_status_t to ancestry check (#1501)