Fix node create after delete

node.ResourceVersion must not be set when creating a node.
This issue prevents vk from resolving issues after the vk node instance
has been deleted (for whatever reason).

test/e2e/node_test.go

@@ -0,0 +1,51 @@
+// +build e2e
+
+package e2e
+
+import (
+	"testing"
+	"time"
+
+	"gotest.tools/assert"
+	watchapi "k8s.io/apimachinery/pkg/watch"
+)
+
+// TestNodeCreateAfterDelete makes sure that a node is automatically recreated
+// if it is deleted while VK is running.
+func TestNodeCreateAfterDelete(t *testing.T) {
+	chErr := make(chan error, 1)
+	chDone := make(chan struct{})
+	defer close(chDone)
+
+	go func() {
+		var deleted bool
+		wait := func(e watchapi.Event) (bool, error) {
+			select {
+			case <-chDone:
+				return true, nil
+			default:
+			}
+
+			if deleted {
+				return f.WaitUntilNodeAdded(e)
+			}
+			if e.Type == watchapi.Deleted {
+				deleted = true
+			}
+			return false, nil
+		}
+		chErr <- f.WaitUntilNodeCondition(wait)
+	}()
+
+	assert.NilError(t, f.DeleteNode())
+
+	timer := time.NewTimer(60 * time.Second)
+	defer timer.Stop()
+
+	select {
+	case <-timer.C:
+		t.Fatal("timeout waiting for node to be recreated")
+	case err := <-chErr:
+		assert.NilError(t, err)
+	}
+}