Some module dir may not be the git root itself. Some modules may
share the same git root. e.g. "development/tools/apkcheck" module's
git root is "development/". So we need to look at the parent
directories too when going through all the modules.
Change-Id: Id2ce859efc0d5f6286eb8545fd6a21244e7d40a6
e472fe6d27