dextrose-updater: clean cache earlier

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Release dextrose-updater 5.11

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
olpc-au-configs: include snapshot reponame

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
olpc-au-configs: require harvest new packages

Include harvest-monitor and harvest-tracker as required
packages to force its installation in previous images.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
olpc-au-configs: require olpc-powerd

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Release olpc-au-configs 0.1-15

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>