`ls_parser` parses data incorrectly in case of broken symlinks

[jobselko]

The _load(self) method of the Directory(dict) class in the insights-core/insights/core/ls_parser.py is unable to parse the broken symlinks correctly when using the ls -lanRL command.

Example:

[root@jobselko /]# ls -lan /run/systemd/units
total 0
drwxr-xr-x.  2 0 0  60 Jun 29 06:53 .
drwxr-xr-x. 16 0 0 400 Jun 28 06:40 ..
lrwxrwxrwx.  1 0 0  32 Jun 28 06:40 invocation:auditd.service -> ad92564f4a9e4fd8a7a77bb00dbd2ab9

[root@jobselko /]# ls -lanL /run/systemd/units
ls: cannot access '/run/systemd/units/invocation:auditd.service': No such file or directory
total 0
drwxr-xr-x.  2 0 0  60 Jun 29 06:53 .
drwxr-xr-x. 16 0 0 400 Jun 28 06:40 ..
l??????????  ? ? ?   ?            ? invocation:auditd.service

Parsed result: '? ? invocation:auditd.service': {'type': 'l', 'perms': '??????????', 'owner': '?', 'group': '?', 'se_user': '?', 'se_role': None, 'se_type': None, 'se_mls': None, 'name': '? ? invocation:auditd.service', 'raw_entry': 'l?????????? ? ? ? ? ? invocation:auditd.service', 'dir': '/etc/systemd/system'}