4.x: Add optional fallback for `ControlConnection#reconnect()` #731

Job	Run time
Unit tests (8)	2m 8s
Full verify (8)	1m 50s
Setup ITs	7s
Build (8)	1m 0s
Cassandra ITs (RELEASE-3.X, 8)	20m 15s
Cassandra ITs (RELEASE-4.X, 8)	21m 57s
Scylla ITs (ENTERPRISE-RELEASE, 8)	29m 30s
Scylla ITs (ENTERPRISE-PRIOR-RELEASE, 8)	35m 57s
Scylla ITs (OSS-RELEASE, 8)	10m 32s
Scylla ITs (OSS-PRIOR-RELEASE, 8)	10m 39s
	2h 13m 55s

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