Refactor the code and reuse WriteAnimationTarget to export
the target element for the condition element in stCondLst
Add testTdf123557 to make sure import-export-import works.
As SdOOXMLExportTest2::testTdf90627 no longer produce corupt
pptx that has endCondLst without Cond element, make the
xpath more specific about what is testing.
Update schema because drawooo:enhanced-path incluced in the
Reviewed-by: Mark Hung <email@example.com>