Bump zram-fraction to 1.0 for debuginfod.archlinux.org

debuginfod.archlinux.org runs into high swap often, but also gets good
compression ratio; try upping the zram size to 100% of RAM (from 50%).

host_vars/debuginfod.archlinux.org/misc

 filesystem: btrfs
 ipv4_address: 168.119.240.111
 ipv6_address: 2a01:4f8:c010:74d4::1
+zram_fraction: 1.0
 wireguard_address: 10.0.0.35
 wireguard_public_key: Wp9ruR2+pCj0TsATuJZiUxk9x6BwcUhXs/yZlmGYjRE=