Auto import images for containerd image store #8656

Job	Run time
build / Build	7m 2s
Integration Tests (certrotation)	1m 16s
Integration Tests (cacertrotation)	1m 39s
Integration Tests (etcdrestore)	1m 24s
Integration Tests (localstorage)	1m 4s
Integration Tests (startup)	6m 49s
Integration Tests (custometcdargs)	31s
Integration Tests (etcdsnapshot)	7m 22s
Integration Tests (kubeflags)	6m 21s
Integration Tests (longhorn)	2m 34s
Integration Tests (secretsencryption)	1m 45s
Integration Tests (flannelnone)	1m 1s
	38m 48s

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