Fix genrules depending on Go tools

genrules lost the ability to depend on Go tools after
I05e945f38915d49cd3c0ab72a86576949bc7eff2 which converted
VisitDirectDeps from blueprint Modules to android Modules.
Add VisitDirectDepsBlueprint to visit all modules including
blueprint Modules, and use it in genrule.  Also add a check
for disabled modules that was being handled by
VisitDirectDeps.

Test: m checkbuild
Change-Id: I65724283166c63596d071e598c08fed87ef32896