feat: build config can specify package CPE #3159

Job	Run time
Build melange and add to artifact cache	42s
Build packages (bubblewrap, hello-wolfi)	1m 45s
Build packages (bubblewrap, glibc)	13m 4s
Build packages (bubblewrap, tini)	1m 16s
Build packages (bubblewrap, lzo)	1m 30s
Build packages (bubblewrap, bubblewrap)	1m 18s
Build packages (bubblewrap, gitsign)	2m 49s
Build packages (bubblewrap, guac)	4m 2s
Build packages (bubblewrap, mdbook)	4m 9s
Build packages (bubblewrap, s3cmd)	1m 13s
Build packages (bubblewrap, perl-yaml-syck)	2m 28s
Build packages (bubblewrap, ncurses)	2m 20s
Build packages (qemu, hello-wolfi)	2m 26s
Build packages (qemu, glibc)	14m 54s
Build packages (qemu, tini)	2m 20s
Build packages (qemu, lzo)	2m 30s
Build packages (qemu, bubblewrap)	2m 21s
Build packages (qemu, gitsign)	4m 12s
Build packages (qemu, guac)	5m 48s
Build packages (qemu, mdbook)	5m 50s
Build packages (qemu, s3cmd)	2m 3s
Build packages (qemu, perl-yaml-syck)	2m 14s
Build packages (qemu, ncurses)	3m 12s
	1h 24m 26s

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