move to internal package

Author: zeitlinger

sdk-autoconfigure-support/src/main/java/io/opentelemetry/instrumentation/internal/resources/ResourceProviderPropertiesCustomizer.java

@@ -53,7 +53,7 @@ public class ResourceProviderPropertiesCustomizer implements AutoConfigurationCu
         "cloudfoundry");
     // for testing
     DISABLED_BY_DEFAULT_RESOURCE_PROVIDERS.put(
-        "io.opentelemetry.instrumentation.resources.ResourceProviderPropertiesCustomizerTest$Provider",
+        "io.opentelemetry.instrumentation.internal.resources.ResourceProviderPropertiesCustomizerTest$Provider",
         "test");
   }
 

sdk-autoconfigure-support/src/test/java/io/opentelemetry/instrumentation/internal/resources/ResourceProviderPropertiesCustomizerTest.java

@@ -30,6 +30,10 @@
  */
 public class ResourceProviderPropertiesCustomizerTest {
 
+  /**
+   * This class is internal and is hence not for public use. Its APIs are unstable and can change at
+   * any time.
+   */
   public static final class Provider implements ResourceProvider {
     @Override
     public Resource createResource(ConfigProperties config) {
@@ -62,7 +66,7 @@ private EnabledTestCase(
   @TestFactory
   Stream<DynamicTest> enabledTestCases() {
     String className =
-        "io.opentelemetry.instrumentation.resources.ResourceProviderPropertiesCustomizerTest$Provider";
+        "io.opentelemetry.instrumentation.internal.resources.ResourceProviderPropertiesCustomizerTest$Provider";
     return Stream.of(
             new EnabledTestCase(
                 "explicitEnabled", true, Collections.emptySet(), Collections.emptySet(), true),