* make_targz
* run_script_in_chroot
* recompress_initramfs - rebuilds initramfs image in the chroot
* run_mksquashfs - runs mksquashfs available in the chroot
* get_installed_packages - lists packages installed in the chroot
* copy_kernel_initramfs - copy/move kernel and initramfs from the chroot
Change-Id: I49eb92f0dc0303e35d7630d7690b0004a2018ccf
Implements: blueprint dynamically-build-bootstrap