PHRAS-4007: Auth provider - add keycloak provider - openid #876

Job	Run time
build phraseanet-fpm / build	4m 11s
build phraseanet-worker / build	4m 21s
build phraseanet-nginx / build	3m 19s
build phraseanet-db / build	37s
build phraseanet-elasticsearch / build	19s
build phraseanet-setup / build	3m 44s
unit test	8m 18s
	24m 49s

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