We use ansible's to_nice_yaml output filter when writing ansible
datastructures to yaml. This has a default indent of 4, but we humans
usually write yaml with an indent of 2. Make the generated yaml more
similar to what us humans write and set the indent to 2.
Change-Id: I3dc41b54e1b6480d7085261bc37c419009ef5ba7
f7e92ee669