host alias not allowed to contain `-`

[astephanh]

Describe the bug
A dynamic inventory plugin (hetzner hcloud) may create host names including a dash. This will lead to parse error in lookup/pfsense.py in check_alias_name.

Is there a specific reason, why this character is not allowed?

Expected behavior
Host names should be allowed to contain dash characters

Playbook
Example playbook from repository

Output

TASK [Setup aliases, rules & seperators] *****************************************************************************************************
[ERROR]: Task failed: Finalization of task args for 'pfsensible.core.pfsense_aggregate' failed: Error while resolving value for 'aggregated_aliases': The lookup plugin 'pfsensible.core.pfsense' failed: fw-1_LAN_ips: the name of the alias may only consist of the characters "a-z, A-Z, 0-9 and _"

Environment

• What version of pfsensible.core? 0.7.1
• What version of ansible? core 2.20
• What version of pfSense? 2.8.1

Additional context

[astephanh]

#233