Added check when generating certificates for multiple DNS.

[c-bordon]

related: wazuh/wazuh-packages#3006
releated: #78

Test

root@ubuntu-jammy:~# cat config.yml 
nodes:
  indexer:
    - name: wazuh-indexer
      ip: www.google.es
  server:
    - name: wazuh-server
      ip: www.google.es
  dashboard:
    - name: wazuh-dashboard
      ip: www.google.es

root@ubuntu-jammy:~# bash wazuh-certs-tool.sh -A -v
30/09/2024 14:53:59 INFO: Verbose logging redirected to /root/wazuh-certificates-tool.log
30/09/2024 14:53:59 DEBUG: Reading configuration file.
30/09/2024 14:53:59 ERROR: The DNS www.google.es is not valid.