UidGidResolver

The UidGidResolver resolves user ids and group ids to their corresponding names.

This is done by reading /etc/passwd and /etc/group on the host. Therefore any UID inside a container might not properly match the username inside the container. Since the path is hardcoded usernames provided through ldap, nss-systemd, systemd units with DynamicUser=yes, … will not be resolved correctly.

Usage

Classic gadgets

Implement the UidResolverInterface for the event struct to resolve a UID. The UID which is returned by GetUid() will be resolved to the corresponding username and is passed into SetUserName(...)
```
type UidResolverInterface interface {
  GetUid() uint32
  SetUserName(string)
}
```
Implement the GidResolverInterface for the event struct to a resolve GID. The GID which is returned by GetGid() will be resolved to the corresponding groupname and is passed into SetGroupName(...)
```
type GidResolverInterface interface {
  GetGid() uint32
  SetGroupName(string)
}
```

Image based gadgets

TODO