Update Fortinet appliances

[Cryst]

Update of following Fortinet appliances: -fortiweb -> 7.0.1 added -fortisandbox -> 4.2.2 added -fortiproxy -> 7.0.6 added -fortimanager -> 7.2.1 added -fortimail -> 7.2.1 added -fortigate -> 7.2.1 added -fortianalyzer -> 7.2.1 added Images were tested locally, each appliance is reachable via ping and web interface.

Before submitting a pull request, please check the following.

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When updating an existing appliance:

• [ Yes ] The new version is on top.
• [ Yes ] The filenames in the "images" section are unique, to avoid appliances / version overwriting each other.

• [ Yes ] If you forked the repo, running check.py doesn't drop any errors for the updated file.

  When creating a new appliance:

• It's tested locally, i.e.
  • [ ] You dragged an instance into a project on your box, got it installed (if necessary), and did some basic network checks (ping, UI reachable, etc.).
  • [ ] GNS3 VM can run it without any tweaks.
  • [ ] The device is in the right category: router, switch, guest (hosts), firewall
  • [ ] You filled in as much info as possible (checks the schemas and other appliance files for some guidance).
• [ ] When adding a container: it builds on Docker Hub and can be pulled.
• [ ] The filenames in the "images" section are unique (to avoid appliances and/or versions overwriting each other).
• [ ] If you forked the repo, running check.py doesn't drop any errors for the new file.
• [ ] Optional: a symbol has been created for the new appliance.

[grossmj]

Thanks 👍