v15.3

Features

• Add support for Android sparse images.
  Example:

<project-finetuning>
        <set_packer packer="android-sparse">sda.img</set_packer>
</project-finetuning>

• The key for the primary mirror can be specified with primary_key and host_key.

Bugfixes

• Remove /usr/sbin/policy-rc.d which is used at build time from final image.
• Various bugfixes for UBI volume creation.