The variants.xml file can list a variant with is_empty="true" and no
groups. If such variant is found, not package gathering will be run for
it, and no repos will be created.
This only makes sense for a variant that will have some other
deliverables like live media or images.
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
CHANGE: Rename product_* config options to release_* for consistency with productmd.
ACTION: Rename product_name, product_short, product_version, product_is_layered to release_* in config files.
Rename //variant/product to //variant/release in variants XML.
Previous test data was insufficient for proper testing.
Test compose runs and depsolving tests require precisely
set NVRs, dependencies, sub-packages, etc.
Using rpmfluff for these would be an overkill, it's better
to create RPMs directly from specs.
