Expose old config field for api < 1.19
Expose old config field for api < 1.19

Signed-off-by: Antonio Murdaca <b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8@runcom.ninja>

vdemeester/engine-api,mikedougherty/engine-api,rhatdan/engine-api,jwhonce/engine-api,thaJeztah/engine-api,msabansal/engine-api,docker/engine-api