Merge pull request #1 from parmus/master

Set hostname in duckdb from DHCP
Merge pull request #2 from parmus/master

Moved from spotify-installer patch
add bootstrap::keyringfile option

named file in keyrings/ is passed as --keyrings option to debootstrap
Merge pull request #3 from nferch/master

Add bootstrap::keyring configuration option
logging bugfix
logging message for eth0 readiness
[bugfix] don't expand dollar signs when fetching duckdb variables
Merge pull request #4 from nferch/master

Bugfixes and logging enhancements