CHORE: force yaml files indentation (2 spaces)
CHORE: force yaml files indentation (2 spaces)

use 2 spaces instead of 4 spaces

Refs: #379

Asqatasun/Asqatasun,Asqatasun/Asqatasun,Asqatasun/Asqatasun,Asqatasun/Asqatasun,Asqatasun/Asqatasun