LeapMicro 6.0 pkglistgen for 000productcompose

[lkocman]

I'd like to use 000productcompose for Leap Micro 6.0 after talking to maintenance team. Let's make sure pkglistgen works for it.

[lkocman]

I can't really test this on pontifex

however
qu=""
flavors=(x86_64 aarch64)
version=echo $stage/iso/openSUSE-Leap-Micro-$micro_version$qu-$flavor-Build[0123456789]*.[0123456789]*.iso

should match the openSUSE-Leap-Micro-6.0-x86_64-Build14.1.iso

https://build.opensuse.org/projects/openSUSE:Leap:Micro:6.0/packages/000productcompose:suse_microos_x86_64/repositories/product/binaries

openSUSE-Leap-Micro-6.0-x86_64-Build14.1-Debug.iso (4.37 GB)	
openSUSE-Leap-Micro-6.0-x86_64-Build14.1-Source.iso (3.66 GB)	
openSUSE-Leap-Micro-6.0-x86_64-Build14.1.iso (1.46 GB)