Copying helm values from the interface does not work

When copying helm values from onyxia web ui (to use them in another service manually for instance), the copied values are not working :

* All numeric variable are treated as string, which causes errors when passing them to the chart :

```yaml
networking:
user:
port: "5000"
enabled: false
```

should be

```yaml
networking:
user:
port: 5000
enabled: false
```

* the network policy is missing configuration for ingress to work :

```yaml
security:
networkPolicy:
enabled: true
```

should be something like :

```yaml
from:
- ipBlock:
cidr: ****
```