[Release 1.31] Simplify svclb ds #8551

Job	Run time
build / Build	6m 34s
Integration Tests (certrotation)	1m 31s
Integration Tests (cacertrotation)	1m 35s
Integration Tests (etcdrestore)	1m 33s
Integration Tests (localstorage)	1m 14s
Integration Tests (startup)	7m 11s
Integration Tests (custometcdargs)	56s
Integration Tests (etcdsnapshot)	7m 18s
Integration Tests (kubeflags)	7m 2s
Integration Tests (longhorn)	2m 41s
Integration Tests (secretsencryption)	2m 41s
Integration Tests (flannelnone)	1m 13s
	41m 29s

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