Fix failures when build-config.json is missing.
Fix failures when build-config.json is missing.

bgrins/tofino,mozilla/tofino,mozilla/tofino,jsantell/tofino,bgrins/tofino,victorporof/tofino,jsantell/tofino,victorporof/tofino,mozilla/tofino,bgrins/tofino,jsantell/tofino,jsantell/tofino,mozilla/tofino,bgrins/tofino