pass canonicalized url to youtube-dl

avoids this kind of error:
wbgrp-svc294 2018-01-19 21:04:43,973 648 ERROR BrozzlingThread:39295 youtube_dl.to_stderr(YoutubeDL.py:514) ERROR: Unable to download webpage: <urlopen error no host given> (caused by URLError('no host given',))
wbgrp-svc294 2018-01-19 21:04:43,973 648 ERROR BrozzlingThread:39295 root.brozzle_site(worker.py:521) proxy error (site.proxy=wbgrp-svc400.us.archive.org:8002), will try to choose a healthy instance next time site is brozzled: youtube-dl hit apparent proxy error from https:/www.laphil.com/press1718

brozzler/worker.py

@@ -290,8 +290,12 @@ class BrozzlerWorker:
     def _try_youtube_dl(self, ydl, site, page):
         try:
             self.logger.info("trying youtube-dl on {}".format(page))
+
             with brozzler.thread_accept_exceptions():
-                info = ydl.extract_info(page.url)
+                # we do whatwg canonicalization here to avoid "<urlopen error
+                # no host given>" resulting in ProxyError
+                # needs automated test
+                info = ydl.extract_info(urlcanon.whatwg(page.url))
             self._remember_videos(page, ydl.brozzler_spy)
             # logging.info('XXX %s', json.dumps(info))
             if self._using_warcprox(site):

setup.py

@@ -32,7 +32,7 @@ def find_package_data(package):
 
 setuptools.setup(
         name='brozzler',
-        version='1.1b12.dev277',
+        version='1.1b12.dev278',
         description='Distributed web crawling with browsers',
         url='https://github.com/internetarchive/brozzler',
         author='Noah Levitt',