make test: properly propagate exit status
make test: properly propagate exit status

Change-Id: Ie9f48a0d5e0a9cd08eb8f07d49149eee40f04131
Signed-off-by: Klement Sekera <b8003f27414ca85c37624503b7b4e8f8c829bb4d@cisco.com>

chrisy/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,milanlenco/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,vpp-dev/vpp,milanlenco/vpp,milanlenco/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,milanlenco/vpp,vpp-dev/vpp,FDio/vpp,milanlenco/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,milanlenco/vpp