docs: remove ConfigurationServiceProvider obsolete usage

docs/documentation/configuration.md

@@ -7,7 +7,7 @@ permalink: /docs/configuration
 
 # Configuration options
 
-The Java Operator SDK (JOSDK for short) provides several abstractions that work great out of the 
+The Java Operator SDK (JOSDK) provides several abstractions that work great out of the 
 box. However, while we strive to cover the most common cases with the default behavior, we also 
 recognize that that default behavior is not always what any given user might want for their 
 operator. Numerous configuration options are therefore provided to help people tailor the 
@@ -23,29 +23,20 @@ Configuration options act at several levels, depending on which behavior you wis
 ## Operator-level configuration
 
 Configuration that impacts the whole operator is performed via the `ConfigurationService` class. 
-An instance is provided by the `ConfigurationServiceProvider.instance()` method. This is the 
-normal way for user-code to retrieve the current `ConfigurationService` instance. Sensible 
-defaults are provided but you can change the default behavior by overriding the current 
-configuration using `ConfigurationServiceProvider.overrideCurrent` method, providing a 
-`ConfigurationServiceOverrider` `Consumer` that will apply the modifications you wish to perform 
-on the configuration.
+`ConfigurationService` is an abstract class, and the implementation can be different based 
+on which flavor of the framework is used. For example Quarkus Operator SDK replaces the 
+default implementation. Configurations are initialized with sensible defaults, but can 
+be changed during initialization.
 
 For instance, if you wish to not validate that the CRDs are present on your cluster when the 
 operator starts and configure leader election, you would do something similar to:
 
 ```java
-ConfigurationServiceProvider.overrideCurrent(o -> o.checkingCRDAndValidateLocalModel(false)
+Operator operator = new Operator( override -> override
+        .checkingCRDAndValidateLocalModel(false)
         .withLeaderElectionConfiguration(new LeaderElectionConfiguration("bar", "barNS")));
 ```
 
-Note that you can also obtain the same result by passing the `ConfigurationServiceOverrider` 
-`Consumer` instance to the `Operator` constructor:
-
-```java
-new Operator(o -> o.checkingCRDAndValidateLocalModel(false)
-        .withLeaderElectionConfiguration(new LeaderElectionConfiguration("bar","barNS")));
-```
-
 ## Reconciler-level configuration
 
 While reconcilers are typically configured using the `@ControllerConfiguration` annotation, it 

docs/documentation/faq.md

@@ -73,10 +73,9 @@ Furthermore, you may not be able to list CRDs at startup which is required when
 is `true` (`false` by default). To disable, set it to `false` at [Operator-level configuration](./configuration.md#operator-level-configuration):
 
 ```java
-ConfigurationServiceProvider.overrideCurrent(o -> o.checkingCRDAndValidateLocalModel(false));
+Operator operator = new Operator( override -> override.checkingCRDAndValidateLocalModel(false));
 ```
 
-
 ### Q: How to fix `sun.security.provider.certpath.SunCertPathBuilderException` on Rancher Desktop and k3d/k3s Kubernetes
 
 It's a common issue when using k3d and the fabric8 client tries to connect to the cluster an exception is thrown:

docs/documentation/features.md

@@ -769,7 +769,7 @@ follows:
 
 ```java
 Metrics metrics= …;
-ConfigurationServiceProvider.overrideCurrent(overrider->overrider.withMetrics(metrics));
+Operator operator = new Operator(client, o -> o.withMetrics());
 ```
 
 ### Micrometer implementation