fix: make CRD output directory follow Kubernetes extension configuration (#605)

Fixes #603

Author: metacosm

core/deployment/src/main/java/io/quarkiverse/operatorsdk/deployment/CRDGeneration.java

@@ -1,5 +1,9 @@
 package io.quarkiverse.operatorsdk.deployment;
 
+import static io.quarkus.kubernetes.deployment.Constants.KUBERNETES;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -72,8 +76,10 @@ CRDGenerationInfo generate(OutputTargetBuildItem outputTarget,
         final var generated = new HashSet<String>();
 
         if (needGeneration) {
-            final String outputDirName = crdConfiguration.outputDirectory;
-            final var outputDir = outputTarget.getOutputDirectory().resolve(outputDirName).toFile();
+            Path targetDirectory = crdConfiguration.outputDirectory.map(
+                    d -> Paths.get("").toAbsolutePath().resolve(d))
+                    .orElse(outputTarget.getOutputDirectory().resolve(KUBERNETES));
+            final var outputDir = targetDirectory.toFile();
             if (!outputDir.exists()) {
                 if (!outputDir.mkdirs()) {
                     throw new IllegalArgumentException("Couldn't create " + outputDir.getAbsolutePath());

core/runtime/src/main/java/io/quarkiverse/operatorsdk/runtime/CRDConfiguration.java

@@ -42,10 +42,11 @@ public class CRDConfiguration {
     public List<String> versions;
 
     /**
-     * The directory where the CRDs will be generated, relative to the project's output directory.
+     * The directory where the CRDs will be generated, defaults to the {@code kubernetes}
+     * directory of the project's output directory.
      */
-    @ConfigItem(defaultValue = DEFAULT_OUTPUT_DIRECTORY)
-    public String outputDirectory;
+    @ConfigItem
+    public Optional<String> outputDirectory;
 
     /**
      * Whether the extension should generate all CRDs even if some are not tied to a Reconciler.

docs/modules/ROOT/pages/includes/quarkus-operator-sdk.adoc

@@ -78,7 +78,7 @@ a|icon:lock[title=Fixed at build time] [[quarkus-operator-sdk_quarkus.operator-s
 
 [.description]
 --
-The directory where the CRDs will be generated, relative to the project's output directory.
+The directory where the CRDs will be generated, defaults to the `kubernetes` directory of the project's output directory.
 
 ifdef::add-copy-button-to-env-var[]
 Environment variable: env_var_with_copy_button:+++QUARKUS_OPERATOR_SDK_CRD_OUTPUT_DIRECTORY+++[]
@@ -87,7 +87,7 @@ ifndef::add-copy-button-to-env-var[]
 Environment variable: `+++QUARKUS_OPERATOR_SDK_CRD_OUTPUT_DIRECTORY+++`
 endif::add-copy-button-to-env-var[]
 --|string 
-|`kubernetes`
+|
 
 
 a|icon:lock[title=Fixed at build time] [[quarkus-operator-sdk_quarkus.operator-sdk.crd.generate-all]]`link:#quarkus-operator-sdk_quarkus.operator-sdk.crd.generate-all[quarkus.operator-sdk.crd.generate-all]`