Allow for custom file extensions

[ryanmerolle]

Given the shift to multi-vendor support, in the plugin config, you should be able to provide a list of file extensions.

We could likely create another issue to set a filte extension check for each platform.

For now, we should focus on allowing the list to be edited.

As an example:
Arista: ".swi"
Cisco: ".bin"
Fortinet: ".out"
Palo Alto: no extension (might be challenging, but most use the UI)
Cumulus: ".bin"
Sonic: looks like no file extension
Juniper: I cannot remember
Opengear: ".flash"

Typing this out, we may want to allow any filename/extension. Thoughts?

[alsigna]

I left only .bin filter as plugin can upload/upgrade only Cisco IOS boxes. Someone can try to upload/upgrade device with wrong type of image in case of filter will be less strict. Also I do not have infrastructure to test upload/upgrade for other kind of vendors.

Probably, SoftwareImage model can have reference to Manufacturer model... will think about it. But (imho) just extending image filter can be dangerous.

[ryanmerolle]

Yep I agree. I think the gaurs tail you put in place for upgrades by not allowing non bin files to be uploaded should just move to the upgrade process that would check platform is logic. I'm happy to help and think about this also.