config: support explicit name variable
During [1], it was noticed that the tree names differ between variants for the same Brew build as they come from different trigger configurations. This is problematic as the tree names are linked to Checkouts, which are common for all variants for Brew builds.
Allow this to be fixed by specifying the tree name ('name' pipeline variable) explicitely.
Signed-off-by: Michael Hofmann mhofmann@redhat.com