Replace SAI with LUSD #3889

Job	Run time
macOS--mono-only	11m 45s
linux-vanilla--stockdotnet6-and-newmono	6m 6s
linux-github--dotnet-and-newmono	7m 30s
linux-github--dotnet-and-mono	3m 50s
linux-vanilla--stockdotnet6-and-stockmono	6m 38s
linux-vanilla--stockdotnet6-only	4m 53s
linux-vanilla--stockmono-only	5m 11s
macOS--dotnet6-and-mono	11m 58s
macOS--dotnet6-only	3m 58s
windows--dotnet6-and-legacyFramework	7m 58s
windows--dotnet6-only	10m 20s
linux-vanilla--newmono-only	8m 17s
windows--legacyFramework-only	7m 16s
conventions	1m 15s
snap_pkg	6m 59s
snap_pkg_beta	6m 29s
	1h 50m 23s

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