Switch preferred sandbox from bwrap to buildbox-run
This switches the default sandbox backend from bwrap to buildbox-run. The bwrap backend is still available for a while to smooth the transition but has to be enabled explicitly by setting the environment variable BST_FORCE_SANDBOX=bwrap
. A tests-bwrap CI job makes sure this keeps working until we completely drop it.
https://mail.gnome.org/archives/buildstream-list/2020-April/msg00029.html
Fixes #719 (closed).
Edited by Jürg Billeter