FeignCircuitBreaker should override target(Target)

[sleicht]

Describe the bug
If Spring Cloud Circuitbreaker is used and feign client is created via annotation FeignCircuitBreakerTargeter doesn't call target method of FeignCircuitBreaker when no fallback is defined.

Sample
@FeignClient(name = "Restadapter", url = "rest-endpoint", configuration = FeignClientConfiguration.class)

[OlgaMaciaszek]

@sleicht could you please provide a minimal, complete, verifiable example that reproduces the issue, including steps to reproduce, what you expect to happen and what is happening instead?

[sleicht]

@OlgaMaciaszek Sure. This test should be green: https://github.com/sleicht/FeignCircuitBreakerTest/blob/master/src/test/java/com/example/openfeign/FeignClientServiceTest.java

As it is the FeignCircuitBreakerInvocationHandler will not get invoked but it should if I'm not mistaken.