Fix async deletion of stored resources in KRM (#303)

## Description

Fix for async deletion issue of stored resources caused by
implementation of multi kube context feature


## Type of Change

Please delete options that are not relevant.

* Bug fix (non-breaking change which fixes an issue)

## Checklist

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit/integration tests pass locally with my
changes

Signed-off-by: David Kornel <kornys@outlook.com>

Author: kornys

test-frame-common/src/main/java/io/skodjob/testframe/resources/KubeResourceManager.java

@@ -786,9 +786,9 @@ public void deleteResources(boolean async) {
         LOGGER.info("Deleting all resources for [{}]/{}", ctxId, testName);
         Stack<ResourceItem<?>> stack = byTest.get(testName);
         AtomicInteger count = new AtomicInteger(stack.size());
+        List<CompletableFuture<Void>> waiters = new ArrayList<>();
         while (!stack.isEmpty()) {
             ResourceItem<?> item = stack.pop();
-            List<CompletableFuture<Void>> waiters = new ArrayList<>();
             CompletableFuture<Void> cf = CompletableFuture.runAsync(() -> {
                 try {
                     item.throwableRunner().run();
@@ -803,9 +803,9 @@ public void deleteResources(boolean async) {
             }
             count.decrementAndGet();
             deleteCallbacks.forEach(cb -> Optional.ofNullable(item.resource()).ifPresent(cb));
-            if (!waiters.isEmpty()) {
-                CompletableFuture.allOf(waiters.toArray(new CompletableFuture[0])).join();
-            }
+        }
+        if (!waiters.isEmpty()) {
+            CompletableFuture.allOf(waiters.toArray(new CompletableFuture[0])).join();
         }
         byTest.remove(testName);
         if (byTest.isEmpty()) {

test-frame-test-examples/src/test/java/io/skodjob/testframe/test/integration/KubeResourceManagerCleanerIT.java

@@ -27,7 +27,7 @@
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 @TestInstance(TestInstance.Lifecycle.PER_CLASS)
-@ResourceManager(asyncDeletion = false)
+@ResourceManager(asyncDeletion = true)
 final class KubeResourceManagerCleanerIT extends AbstractIT {
 
     @BeforeAll