4.x: Add optional fallback for `ControlConnection#reconnect()` #733

Job	Run time
Setup ITs	4s
Unit tests (8)	2m 12s
Full verify (8)	1m 40s
Build (8)	58s
Scylla ITs (ENTERPRISE-RELEASE, 8)	29m 29s
Scylla ITs (ENTERPRISE-PRIOR-RELEASE, 8)	35m 59s
Cassandra ITs (RELEASE-3.X, 8)	20m 37s
Scylla ITs (OSS-RELEASE, 8)	10m 42s
Cassandra ITs (RELEASE-4.X, 8)	22m 44s
Scylla ITs (OSS-PRIOR-RELEASE, 8)	10m 58s
	2h 15m 23s

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