The space bandit rules specify that:

“Bandits will ignore non-combat ships ”

They do not specify what exactly is a non-combat ship. Is a non-combat ship a ship with combat type none, ie is a satellite, escape pod, or a space lane diner, or, does an (un)armed auxilliary class also count?

I guess the purpose of my question is basically asking will npc bandits attack the Y-8 miner ships?

According to Falcon's comments in this thread Y8 Minng Vessels and other freighters are now susceptible to bandit attacks.

The remaining non-combat ships (ships for which combat has not yet been enabled) are frigates, capital ships, and super capital ships.

Combat enabled ships can be found on the Space Combat Rules page :)

As others have said here, the rules page linked in Eli's post lists the combat-enabled ship types. Currently disabled are Frigates, Capital Ships and Super Capital ships. In addition, Space Stations and Vehicles are not combat-enabled.

In short, anything with an armour stat either IS or WILL BE SHORTLY enabled for combat(with a few exceptions like the Venator). Anything without an armour stat is not enabled for combat.