Use host from the original hosts list when boreas is enabled

[jjnicola]

Depends on greenbone/gvm-libs#490

What:
Use host from the original hosts list when boreas is enabled

Why:
When boreas is enabled, a new host element is created with only the IP address,
while the hostname was lost during the alive detection.

How:
Find a host which has an alias, which resolves to an IP. The ip reverse-lookup to another hostname/vhost. eg www.google.com
it resolves to 142.250.184.196, and the IP reverse-lookup to fra24s11-in-f4.1e100.net

Then start a scan against it

start_scan scan_id="829097a9-85d5-4bb8-bac0-e64c362b2836">
  <targets>
    <target>
      <hosts>www.google.com</hosts>
      <exclude_hosts/>
      <finished_hosts/>
      <ports>22</ports>
      </credentials>
    </target>
  </targets>
  <scanner_params>
    <test_alive_hosts_only>1</test_alive_hosts_only>
    <expand_vhosts>1</expand_vhosts>
  </scanner_params>
  <vt_selection>
    <vt_single id="1.3.6.1.4.1.25623.1.0.90022"/>
  </vt_selection>
</start_scan>

without the patch you see:

sd   main:MESSAGE:2021-05-03 14h05.27 utc:25679: Vulnerability scan 829097a9-85d5-4bb8-bac0-e64c362b2836 started for host: 172.217.22.196 (Vhosts: 172.217.22.196, muc11s01-in-f4.1e100.net)

with the patch you see, and the original hostname (the one in the target) is used as vhosts as well:

sd   main:MESSAGE:2021-05-03 14h10.58 utc:25911: Vulnerability scan 829097a9-85d5-4bb8-bac0-e64c362b2836 started for host: 172.217.22.196 (Vhosts: 172.217.22.196, muc11s01-in-f4.1e100.net, www.google.com)

Checklist:

• Tests
• [ X] CHANGELOG Entry