* Turned on wt2html and wt2wt Parsoid modes for all tests with
aggressive normalization to eliminate the need to add html/parsoid
sections.
We expect these modes to pass.
* The failing wt2wt tests is because the input wikitext duplicates
arguments and Parsoid's wt2html doesn't capture duplicate template
args which cause the wt2wt output to be normalized.
This explains the two failing wt2wt tests and the corresponding
selser "failures".
* The failing wt2html safesubst test might be a real failure and
something we will have to look into. Will file a phab task for this.
* Added a new test for T272507 that fails with Parsoid right now,
but will pass in a subsequent patch.
Change-Id: I96fba68dda7524d2fe562eb60ced64e5e0518f65