Add nonroot-devices flag to agent CLI #2022

Job	Run time
build / Build	6m 34s
Integration Tests (certrotation)	1m 55s
Integration Tests (cacertrotation)	2m 11s
Integration Tests (etcdrestore)	2m 8s
Integration Tests (localstorage)	1m 51s
Integration Tests (startup)	7m 48s
Integration Tests (custometcdargs)	1m 12s
Integration Tests (etcdsnapshot)	8m 8s
Integration Tests (kubeflags)	7m 13s
Integration Tests (longhorn)	3m 10s
Integration Tests (secretsencryption)	3m 7s
Integration Tests (flannelnone)	1m 46s
	47m 3s

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