Add support in diagnostic logging to archive PV (#1609)

* Added methods to copy persistent volume contents to the client machine
by the use of a temporary pod. Creating a temporary pod to mount to same
volume used by the tests.

Also few more fixes in the logging of files

* Enable the cleanup method

* Add javadocs

* Correct typo

* Addressing review comments

* Addressing the review comments

* Removed the persistent volume related assertions since it is no loner
needed

* Change the pod container image to use oraclelinux instead of nginx
and wait for temp pod to be deleted

* javadoc fix

* fic formatting

Author: sankarpn

new-integration-tests/src/test/java/oracle/weblogic/kubernetes/assertions/TestAssertions.java

@@ -68,6 +68,22 @@ public static Callable<Boolean> podExists(String podName, String domainUid, Stri
     };
   }
 
+  /**
+   * Check a named pod does not exist in the given namespace.
+   *
+   * @param podName name of the pod to check for
+   * @param domainUid Uid of WebLogic domain
+   * @param namespace namespace in which to check for the pod
+   * @return true if the pod does not exist in the namespace otherwise false
+   * @throws ApiException when cluster query fails
+   */
+  public static Callable<Boolean> podDoesNotExist(String podName, String domainUid, String namespace)
+      throws ApiException {
+    return () -> {
+      return !Kubernetes.doesPodExist(namespace, domainUid, podName);
+    };
+  }
+
   /**
    * Check if a Kubernetes pod is in running/ready state.
    *
@@ -187,4 +203,5 @@ public static boolean doesImageExist(String searchString) {
   public static boolean isHelmReleaseDeployed(String releaseName, String namespace) {
     return Helm.isReleaseDeployed(releaseName, namespace);
   }
+
 }

new-integration-tests/src/test/java/oracle/weblogic/kubernetes/extensions/IntegrationTestWatcher.java

@@ -11,7 +11,6 @@
 import java.util.ArrayList;
 import java.util.List;
 
-import io.kubernetes.client.openapi.ApiException;
 import oracle.weblogic.kubernetes.TestConstants;
 import oracle.weblogic.kubernetes.annotations.Namespaces;
 import oracle.weblogic.kubernetes.utils.CleanupUtil;
@@ -333,12 +332,8 @@ private void collectLogs(ExtensionContext extensionContext, String failedStage)
     } catch (IOException ex) {
       logger.warning(ex.getMessage());
     }
-    try {
-      for (var namespace : namespaces) {
-        LoggingUtil.generateLog((String)namespace, resultDir);
-      }
-    } catch (IOException | ApiException ex) {
-      logger.warning(ex.getMessage());
+    for (var namespace : namespaces) {
+      LoggingUtil.collectLogs((String)namespace, resultDir.toString());
     }
   }