clean up config (#4427) #582

Job	Run time
build phraseanet-db / build	28s
build phraseanet-nginx / build	50s
build phraseanet-elasticsearch / build	31s
build phraseanet-fpm / build	32s
build phraseanet-worker / build	30s
build phraseanet-setup / build	4m 15s
unit test	10m 14s
	17m 20s

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