Fixed maintenance policy test (#584) #167

Job	Run time
integration-tests	58m 39s
add-fw-to-remaining-instances	17s
apply-calico-rules	5s
process-upload-report	11s
notify-slack	6s
integration-tests	57m 26s
add-fw-to-remaining-instances	12s
process-upload-report	14s
apply-calico-rules	5s
notify-slack	3s
	1h 57m 18s

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