1. fix variable shadowing for deferred function;
2. fix deep copy.

1. fix typos;
2. fix clusterrole rules;
3. use os package instead of deprecated io/ioutil;
4. update go modules.

Co-authored-by: wang_yudong <wang_yudong@inspur.com>

This reverts commit 743502cd.

A temporary workaround, refactor the annotation usage later

When receive delete event, we cannot get the origin object anymore, we can just delete the deployment here.