Redis 7 adds some new alias config like `hash-max-listpack-entries` alias `hash-max-ziplist-entries`.
If a config file contains both real name and alias like this:
```
hash-max-listpack-entries 20
hash-max-ziplist-entries 20
```
after set `hash-max-listpack-entries` to 100 and `config rewrite`, the config file becomes to:
```
hash-max-listpack-entries 100
hash-max-ziplist-entries 20
```
we can see that the alias config is not modified, and users will get wrong config after restart.
6.0 and 6.2 doesn't have this bug, since they only have the `slave` word alias.
Co-authored-by: Oran Agra <oran@redislabs.com>
a18c91d642