Merge pull request #2561 from swastik959/th

added ability to inject threads

Author: k8s-ci-robot

util/src/main/java/io/kubernetes/client/util/Threads.java

@@ -17,9 +17,13 @@
 import java.util.concurrent.atomic.AtomicInteger;
 
 public class Threads {
+  private static ThreadFactory defaultFactory = Executors.defaultThreadFactory();
+  // Users can inject their own thread
+  public static void setDefaultThreadFactory(ThreadFactory factory) {
+    defaultFactory = factory;
+  }
 
   public static ThreadFactory threadFactory(String format) {
-    final ThreadFactory defaultFactory = Executors.defaultThreadFactory();
     final AtomicInteger threadNumber = new AtomicInteger(1);
     return r -> {
       Thread thread = defaultFactory.newThread(r);