log: show recipe or cooker logs
log: show recipe or cooker logs

Depending on the arguments, show either the log for a specific recipe/task, the
log for the latest task performed by a recipe, or the latest cooker log.

Signed-off-by: Ross Burton <cd36ec7a67dfb8d589bc66b85fd0a6cf213f3854@intel.com>

kergoth/bb,kergoth/bb,rossburton/bb,rossburton/bb