* Cache first element of service instance list flux.
* Invoke destroy() and afterPropertiesSet() in non-bean ServiceInstanceListSupplier delegates.
* Fix return updated instances.
* Fix return updated instances.
(cherry picked from commit 88b2f0e869)
* Cache first element of service instance list flux.
* Invoke destroy() and afterPropertiesSet() in non-bean ServiceInstanceListSupplier delegates.
* Fix return updated instances.
* Fix return updated instances.