Add a possibility to wire a health check executor

[victorbr]

Add an option to wire in an executor service for health checks

[ryantenney]

I don't want to autowire the executor, especially without a qualifier. How about removing @Autowired and adding a setter so one can be manually wired in?

[victorbr]

Took me some time to recall the context since it's been some 8 months...
You're right, @Autowired is not a good choice here. In our local code we ended up using @Resource.
I'm not sure though how your suggestion would work. If I'm not mistaken the instance of the class is created by the container and not by Spring. So where would the manual wiring take place?