fix: 4.x can't connect to the cluster when first node is non responsive #738

Job	Run time
Setup ITs	7s
Setup ITs	4s
Unit tests (8)	2m 9s
Unit tests (8)	2m 2s
Build (8)	58s
Build (8)	1m 0s
Full verify (8)	1m 47s
Full verify (8)	1m 42s
Cassandra ITs (RELEASE-3.X, 8)	19m 16s
Cassandra ITs (RELEASE-3.X, 8)	20m 21s
Scylla ITs (ENTERPRISE-RELEASE, 8)	31m 53s
Scylla ITs (ENTERPRISE-RELEASE, 8)	31m 50s
Scylla ITs (ENTERPRISE-PRIOR-RELEASE, 8)	27s
Scylla ITs (ENTERPRISE-PRIOR-RELEASE, 8)	28s
Scylla ITs (OSS-RELEASE, 8)	10m 2s
Scylla ITs (OSS-RELEASE, 8)	9m 59s
Scylla ITs (OSS-PRIOR-RELEASE, 8)	10m 30s
Scylla ITs (OSS-PRIOR-RELEASE, 8)	10m 27s
Cassandra ITs (RELEASE-4.X, 8)	23m 29s
Cassandra ITs (RELEASE-4.X, 8)	22m 7s
	3h 20m 38s

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