Comment 4 for bug 1765748

In the nova `test_wsgi` tests there are two different issues to be dealt with:

* short term: the new webob is more strict when parsing qvalues (the q=$foo bits in the header). If these are a fractional value less than 1, the _must_ have a leading 0. That 0.5 instead of .5.

* long term: the best_match method used in best_match_language on nova's Request object is deprecated. The new alternatives are either `lookup` or `basic_filtering` depending on the results desired.

Patch for the short term forthcoming.