Print /var/log/boot.kiwi file on reboot exception

If a reboot exception is thrown in the boot code kiwi will
print the current log file contents to the console before
reboot. This allows systems like public clouds to provide
a verbose information about the boot process
- v7.01.15 released
Use btrfs as write partition for hybrid images (bnc #900922)

For hybrid live iso images there is the optional support to
create a write partition for data persistency. The initial
creation of the filesystem can take a long time on e.g USB
sticks. The creation of a btrfs filesystem without static
inode tables is much faster. Thus the switch to btrfs
Fixed setupDefaultFstab (bnc #900280)

Instead of overwriting a potentially existing fstab file
the function now adds missing entries and also checks if
the source mount device really exists.
- v7.01.16 released
Don't call makeIsoEFIBootable for product iso's

The required data is provided by the installation-images-<distro>
package and doesn't need to be created. In addition the method
checks for the underlaying architecture which does not work when
creating product iso's because there the underlaying architecture
does not necessarily have to match the distro architecture
Set proper boot catalog in aarch64_efi
Don't remove libdrm from boot images
Merge pull request #412 from andreas-schwab/master

Set proper boot catalog in aarch64_efi
Fixed git tag helper

report only first tag matching current version
Correct the loader type of grub2

For the UEFI machines, the loader type has to be "grub2-efi" to
make grub2-install search the efi modules.
Merge pull request #413 from lcp/fix-grub2-loader-type

Correct the loader type of grub2
Activate efi support in suse-13.2-JeOS template
- v7.01.17 released
openSUSE 13.2 is gold :-)

delete obsolete openSUSE 12.2 JeOS template and boot descriptions
Delete obsolete instsource-plugins
Don't write to an undefined file handle
Fixed pre-commit git hook script

correctly parse all existing instsource plugins and set
the include path to the plugin dirs when running perlcritic
Fixed instsource plugin code to be perl critic clean
Delete obsolete openSUSE 12.2 based extra image templates