fix: set HostKeyAlgorithms only from version 5.8

Signed-off-by: Kostas <kpa@tiatechnology.com>

Author: Kostas

templates/opensshd.conf.j2

@@ -36,7 +36,9 @@ HostKey {{key}}
 {% endfor %}
 
 # Specifies the host key algorithms that the server offers.
+{% if sshd_version is version('5.8', '>=') %}
 {{ "HostKeyAlgorithms "+ssh_host_key_algorithms| join(',') if ssh_host_key_algorithms else "HostKeyAlgorithms"|comment }}
+{% endif %}
 
 # Security configuration
 # ======================