4.x: Add optional fallback for `ControlConnection#reconnect()` #688

Job	Run time
Build (8)	1m 5s
Setup ITs	4s
Unit tests (8)	2m 5s
Full verify (8)	1m 36s
Cassandra ITs (RELEASE-3.X, 8)	20m 10s
Cassandra ITs (RELEASE-4.X, 8)	21m 56s
Scylla ITs (ENTERPRISE-RELEASE, 8)	29m 41s
Scylla ITs (ENTERPRISE-PRIOR-RELEASE, 8)	36m 6s
Scylla ITs (OSS-RELEASE, 8)	10m 9s
Scylla ITs (OSS-PRIOR-RELEASE, 8)	10m 40s
	2h 13m 32s

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