Modify Node::repair method for nodetool cluster repair #339

Job	Run time
CCM Integration tests (using Nix) / build	12m 16s
CCM Integration tests / build (3.8)	6m 38s
CCM Integration tests / build (3.11)	7m 17s
CCM Integration tests / build (3.12)	6m 4s
	32m 15s

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