[FEATURE] Add Tenable Nessus Download and Installation Process Using Binary File

[Daniel-Thavapalan]

This PR is raised to allow users to be able to download and install the Tenable Nessus Cloud Agent onto their hosted machines.

This would be a sample payload added in the cluster_vars configuration :

cloud_agent:
  tenable:
    service: "nessusagent"
    github_release: "https://api.github.com/repos/sky-uk/crs-tenable-agent-ansible/releases"
    debpackage: ""
    bin_path: "/opt/nessus_agent/sbin"
    nessus_key_id: ""
    nessus_group_id: ""

• Tested via Jenkins

Output :

ubuntu@jtn05-ccs-dev-es-data-a0-1649261763:~$ systemctl status nessusagent
● nessusagent.service - The Nessus Client Agent
     Loaded: loaded (/lib/systemd/system/nessusagent.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2022-04-06 20:44:07 UTC; 23s ago
   Main PID: 21462 (nessus-service)
      Tasks: 3 (limit: 4656)
     Memory: 3.4M
     CGroup: /system.slice/nessusagent.service
             ├─21462 /opt/nessus_agent/sbin/nessus-service -q
             └─21463 nessusd -q

[dipiazzg]

Code looks good to me, also thanks for testing this in different repos

[citrocity]

This looks good, thanks. Lets wait for few more reviews for this

[sky-amoncadot]

Can't see any issue here from my end

[antoineserrano]

All good to me, thanks for raising this one Daniel.