4.x: Add optional fallback for `ControlConnection#reconnect()` #730

Job	Run time
Build (8)	1m 5s
Unit tests (8)	2m 7s
Setup ITs	5s
Full verify (8)	1m 39s
Cassandra ITs (RELEASE-3.X, 8)	22m 39s
Scylla ITs (ENTERPRISE-RELEASE, 8)	29m 48s
Cassandra ITs (RELEASE-4.X, 8)	22m 19s
Scylla ITs (ENTERPRISE-PRIOR-RELEASE, 8)	35m 52s
Scylla ITs (OSS-RELEASE, 8)	10m 20s
Scylla ITs (OSS-PRIOR-RELEASE, 8)	10m 31s
	2h 16m 25s

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