Support blueprint_go_binary in PathForModuleSrc

Allow blueprint_go_binary to be used as test data by supporting it in
PathForModuleSrc.

Also make python use GetDirectDepsWithTag instead of VisitDirectDeps
so it doesn't fail on the dependency to a Blueprint (non-Android)
module.

Fixes: 186528269
Test: manual
Change-Id: Ibc1d7caf7bf1fa5db805c3b885a95df4baee0ecf