Merge branch 'master' into dev/netservices
ZstdCompressionAlgorithm: 22 is now "best" in libzstd.Ideally we would use ZSTD_MAX_CLEVEL, but we cannot use zstd headersin here...
Add ZstdCompressionAlgorithm.* kernel lib is decompress only (like zlib).* expand compression_test for zstd.