Don't ignore local variations when creating reverse dep

This fixes a bug that reverse dependency can't be made for modules
having local variations. Previously, when module A having local variants
calls AddReverseDependency to module B having local variants, the match
is tested between the non-local variants of module A against all
variants of module B, which can never be successful.

This change fixes it by using all variants of module A when
findMatchingVariants is called for AddReverseDependency.

Test: m
Change-Id: Ib289188a5dd58c72bd6ba07e3c0f825f8b1c6b1b