- zfs integration, make sure pool is exported on shutdown
  * added /run/initramfs/shutdown script compatible to dracut see:
    https://www.kernel.org/pub/linux/utils/boot/dracut/dracut.html
    section: #_dracut_on_shutdown for reference
- renew partition creation code in KIWIBoot. make it more
  readable, reduce duplicate code and allow efi images without
  forcing a boot partition
- fixed use of uninitialized value $record{"filesystem"} in
  pattern match (m//) at KIWIXML.pm
- improve EC2 initrd creation
  * consider filesystem used, do not blindly assume ext3
  * create a "monster" initrd to avoid the mkinitrd code from probing
    into the device tree. The device tree is different on the build
    machine than the target EC2 infrastructure
- exit early if no EC2 account credentials are defined
  * if no credentials are defined we cannot create a bundle, exit after
    initrd creation if no credentials exist