PHRAS-4064-fix-worker-plugin-install-as-app #924

Job	Run time
build phraseanet-elasticsearch / build	35s
build phraseanet-fpm / build	3m 41s
build phraseanet-nginx / build	27s
build phraseanet-db / build	23s
build phraseanet-setup / build	4m 18s
build phraseanet-worker / build	4m 20s
unit test	5m 39s
	19m 23s

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