Add test to show broken behavior of fully qualified name in path property

It reveals a number of issues:
* PathForModuleSrc corrupts the name during validation of path
  components.
* SrcIsModule and SrcIsModuleWithTag do not handle fully qualified names
  properly or detect invalid unqualified names.
* getPathsFromModuleDep does not handle fully qualified names.

Bug: 193228441
Test: m nothing
Change-Id: I583bc5e7f7df8a1b9cc32acefac3dbe43f49a27a