Update SDK/FW to 4.5.1500/2010.1500 and SAI version to 1.21.1.1
SDK/FW features:
1. Added support for Finisar DR4 (FTCD4523E2PCM) on Spectrum-2 and Spectrum-3 systems.
SAI Features:
1. ECMP overlay support for IPv6
2. BFD offloading / 4K scale
3. Host interface user traps + improved trap registration (table entry)
4. gcc11 compilation fixes
5. Read support for ACL redirect action
6. Optimize ECMP DB size
7. Buffer descriptors new defaults
8. Updated port mapping for SN2201
SAI Fixes:
1. Debug counter removal when configured with all drop reasons
- Why I did it
Upgrade Mellanox SDK and SAI versions to latest
- How I did it
Updated submodule pointers
- How to verify it
Regression tested