parserTests: fix broken parsoid-only tests.

A few of the parsoid-only tests had broken/wrong output HTML, which was
being hidden by the normalization process.  In preparation for using
a stricter normalizer, fix up the bogus tests:

a) put a <tbody> inside all <table>s
b) it's <hr> not <hr/>
c) fix an orphaned </span>

Change-Id: I44961cd40f8f29eea005d9c6c7a458aadc4770d0