The cloud-init.config dpkg parser has this sed line which doesn't like the brackets without spaces:
sed -n -e /^datasource_list:/!d -e s/datasource_list:[ \[]*// -e s, \]$,, -e p /etc/cloud/cloud.cfg.d/90_dpkg.cfg
The cloud-init.config dpkg parser has this sed line which doesn't like the brackets without spaces:
sed -n -e /^datasource_ list:/! d -e s/datasource_list:[ \[]*// -e s, \]$,, -e p /etc/cloud/ cloud.cfg. d/90_dpkg. cfg