Add AfterFunc configuration for testing
Add AfterFunc configuration option to hystrix.ConfigureCloser (#111) * Add AfterFunc configuration option to hystrix.ConfigureCloser * Add AfterFunc field to ConfigureCloser Merge function * Add json tag to omit AfterFunc from json encoding Signed-off-by: Chris Guiney <chrisg@tune.com> Co-authored-by: Chris Guiney <chrisg@tune.com>