print error msg if elbe-bootstrap is not on mirror

catch the KeyError exception raised if elbe-bootstrap is not in the cache.

Signed-off-by: Manuel Traut <manut@linutronix.de>
example/beaglebone-black: add linux-image

we need to specify a kernel package if elbe buildchroot is used

Signed-off-by: Manuel Traut <manut@linutronix.de>
examples/beaglebone-black: use armhf rt kernel

Signed-off-by: Manuel Traut <manut@linutronix.de>
buildchroot: print error if db save failed

Signed-off-by: Manuel Traut <manut@linutronix.de>
targetfs: create fstab

auto create a fstab based on the xml file

Signed-off-by: Manuel Traut <manut@linutronix.de>
remove tailing whitespaces and newlines

Signed-off-by: Manuel Traut <manut@linutronix.de>
extract_targetfs create /dev directory

Signed-off-by: Manuel Traut <manut@linutronix.de>
beaglebone-black.xml: use public available mirrors

Signed-off-by: Manuel Traut <manut@linutronix.de>
elbe-init.xml use public available mirrors

Signed-off-by: Manuel Traut <manut@linutronix.de>
elbe-desktop: add init-vm node

and fix indents

Signed-off-by: Manuel Traut <manut@linutronix.de>
hdimage-grub.xml add init-vm node

Signed-off-by: Manuel Traut <manut@linutronix.de>
remove mini-squeeze-nfsroot.xml example

Signed-off-by: Manuel Traut <manut@linutronix.de>
mini-ubi.xml add initvm node

Signed-off-by: Manuel Traut <manut@linutronix.de>
mini-weezy-nfsroot.xml: add initvm node

Signed-off-by: Manuel Traut <manut@linutronix.de>
powerpc.xml: add initvm node

Signed-off-by: Manuel Traut <manut@linutronix.de>
updated.xml: use public mirrors and add initvm node

Signed-off-by: Manuel Traut <manut@linutronix.de>