KEY:
identity_openid[:name]  enable OpenID SSO support

ARGS:
MINIO_IDENTITY_OPENID_ENABLE*               (on|off)    enable identity_openid target, default is 'off'
MINIO_IDENTITY_OPENID_DISPLAY_NAME          (string)    Friendly display name for this Provider/App
MINIO_IDENTITY_OPENID_CONFIG_URL*           (url)       openid discovery document e.g. "https://accounts.google.com/.well-known/openid-configuration"