move: Include fleets of discontinued device types in the fleet selection

[thgreasi]

Change-type: patch
See: https://balena.zulipchat.com/#narrow/stream/345746-aspect.2Fproduct/topic/balenaFin.20discontinuation

Resolves: #
Change-type: major|minor|patch
Depends-on:
See:

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[rcooke-warwick]

@thgreasi this works for me - bin/balena device move <UUID of a fincm3 device> presents me with a list of fleets, that includes fincm3 fleets

[thgreasi]

Thanks for confirming @rcooke-warwick

[thgreasi]

I self-certify!