We can call directly into the blueprint bootstrap.bash using values that
soong_ui has already calculated.
Instead of calling into blueprint.bash, build minibp with microfactory,
and directly run ninja. This allows us to get individual tracing data
from each component.
Test: m -j blueprint_tools
Test: m clean; m -j blueprint_tools
Change-Id: I2239943c9a8a3ad6e1a40fa0dc914421f4b5202c