* toggling k8s configuration with a relevant property fixes gh-585
* integration test with k8s client 1
* tests are green
* integration test using managed context
* fix checkstyle
* checkstyle and test
* preserve EventReloadDetectionMode as it was
* enable k8s config in test app for IT test
* enable secrets for IT test
* conditional class and config should be default
* using conditional annotation
* Deprecate KubernetesAutoServiceRegistration
* Document service registry in kubernetes. Fixes#348
* Refactoring config module to extract common code
Renamed config module to be specific to fabric8
* Kubernetes client config module
* Fixing test to avoid 503 error
* Accounting for missing invocation
* Adding code to deal with potential 503 error
* Fixing class used in polling change listener
* Formatting changes
