switch SDR to level 1b (instead of 1)

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Add PostTrollTrigger to triggers.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Fix gatherer and regioncollector for new metadata and npp granules.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
handle collections in producer.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Merge branch 'feature-aapp-and-npp' of github.com:mraspaud/trollduction into feature-aapp-and-npp