PHRAS-4127 add mysql timeout env #1180

Job	Run time
build phraseanet-worker / build	4m 9s
build phraseanet-nginx / build	3m 23s
build phraseanet-fpm / build	3m 52s
build phraseanet-db / build	38s
build phraseanet-elasticsearch / build	27s
build phraseanet-setup / build	4m 38s
unit test	5m 34s
	22m 41s

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