Chore: Use x/xerrors instead of pkg/errors (#16668)

* Use xerrors instead of pkg/errors

* Add Wrap util func

* Move Wrap to errutil package

pkg/util/errutil/errors.go

@@ -0,0 +1,11 @@
+package errutil
+
+import "golang.org/x/xerrors"
+
+// Wrap is a simple wrapper around Errorf that is doing error wrapping. You can read how that works in
+// https://godoc.org/golang.org/x/xerrors#Errorf but its API is very implicit which is a reason for this wrapper.
+// There is also a discussion (https://github.com/golang/go/issues/29934) where many comments make arguments for such
+// wrapper so hopefully it will be added in the standard lib later.
+func Wrap(message string, err error) error {
+	return xerrors.Errorf("%v: %w", message, err)
+}