4.x: Add advanced shard awareness #1131

Job	Run time
Setup ITs	7s
Full verify (8)	1m 48s
Build (8)	1m 21s
Unit tests (8)	2m 37s
Scylla ITs (ENTERPRISE-RELEASE, 8)	12m 20s
Cassandra ITs (RELEASE-3.X, 8)	23m 43s
Cassandra ITs (RELEASE-4.X, 8)	21m 45s
Scylla ITs (ENTERPRISE-PRIOR-RELEASE, 8)	12m 7s
Scylla ITs (OSS-RELEASE, 8)	12m 9s
Scylla ITs (OSS-PRIOR-RELEASE, 8)	11m 51s
	1h 39m 48s

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