The VMDK image is already produced as stream-optimized. Therefore stop
setting the `StreamOptimized` option in `OSBuildJob` structure by both,
Weldr and Cloud APIs.
Keep the handling of the option in worker for backward compatibility,
in case an older instance of Composer server is used, which does not
produce VMDK manifests as stream-optimized. In such case, the worker
needs to convert the image.
When composer exits, it doesn't wait for the manifest generation goroutines
to finish. This is generally a bad practice so let's introduce a bit of
syncing and a new Shutdown method to prevent this.
This also prevents the manifest generation goroutine from creating weird
states when interrupted on a random line of code.
Signed-off-by: Ondřej Budai <ondrej@budai.cz>
I think it's a natural fit, they access some fields from the server so let's
find a new home for them there.
Signed-off-by: Ondřej Budai <ondrej@budai.cz>
