Unattended Wazuh packages downloader

[c-bordon]

We need to bring the functionality of wazuh-offline_download.sh to wazuh-install.sh, this will download the manager, filebeat, indexer, and dashboard packages.

For this, create the downloader directory and, inside, an sh library that is in charge of what is necessary to carry out the downloads.

We must also add a flag in wazuh-install.sh so that it downloads the packages, examples: -dw/--download-wazuh

[c-bordon]

I am testing the script that downloads the packages from the entire Wazuh stack, at the moment I am not being able to invoke it correctly from wazuh-install.sh, I continue working on it.

cbordon@cbordon-MS-7C88:~/Documents/wazuh/repositorios/wazuh-packages/unattended_installer$ sudo ./wazuh-install.sh -dw deb
[sudo] password for cbordon: 
11/03/2022 16:46:13 INFO: Starting Wazuh installation assistant. Wazuh version: 4.3.0
11/03/2022 16:46:13 ERROR: The system is not supported, supported systems are: Red Hat Enterprise Linux 7, 8; CentOS 7, 8; Amazon Linux 2; Ubuntu 16.04, 18.04, 20.04

[c-bordon]

With the installation of Indexer and Dashboard, the templates that were downloaded for Elasticsearch and Kibana are no longer necessary, now what we have to indicate is that in the case of doing a distributed installation we must modify the files:

/etc/wazuh-indexer/opensearch.yml
/etc/wazuh-dashboard/opensearch_dashboards.yml

[c-bordon]

PR merged