Spotter-VM/vm/etc/apk/repositories

http://dl-cdn.alpinelinux.org/alpine/v3.9/main
http://dl-cdn.alpinelinux.org/alpine/v3.9/community
@vm https://repo.spotter.cz/alpine/v3.9/apk
Squashed commit of the following: - Bump basic OS to Alpine 3.9 - Restructure repo and add layer versioning - Use JSON for all metadata - Merge abuild branch (but without abuild) 2019-02-26 20:24:02 +01:00			`http://dl-cdn.alpinelinux.org/alpine/v3.9/main`
			`http://dl-cdn.alpinelinux.org/alpine/v3.9/community`
Use repo.build.vm as local build host 2019-12-09 21:41:04 +01:00			`@vm https://repo.spotter.cz/alpine/v3.9/apk`