flake: catching illegal-state-exception in the copy test

Author: yue9944882

util/src/test/java/io/kubernetes/client/CopyTest.java

@@ -74,7 +74,7 @@ public void testUrl() throws IOException, ApiException, InterruptedException {
       // block until the connection is established
       inputStream.read();
       inputStream.close();
-    } catch (IOException | ApiException e) {
+    } catch (IOException | ApiException | IllegalStateException e) {
       e.printStackTrace();
     }