PHRAS-4007: Auth provider - add keycloak provider - openid #920

Job	Run time
build phraseanet-db / build	21s
build phraseanet-nginx / build	3m 12s
build phraseanet-fpm / build	3m 39s
build phraseanet-elasticsearch / build	26s
build phraseanet-setup / build	4m 12s
build phraseanet-worker / build	4m 20s
unit test	5m 46s
	21m 56s

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