tests: use baseurl instead of advertisedbaseurl

The distinction matters for e.g. hosts behind load balancers. But for
the test environment, it doesn't matter.

For whatever reason, advertisedbaseurl is resolving to
http://1.0.0.127.in-addr.arpa:$HGPORT on my MBP. This hostname fails
to resolve, causing the test to fail. No clue what's up with that
behavior.

Differential Revision: https://phab.mercurial-scm.org/D4973

tests/wireprotosimplecache.py

@@ -127,7 +127,7 b' class memorycacher(object):'
             paths.append(b'simplecache')
             paths.append(self.key)
 
-            url = b'%s/%s' % (self.req.advertisedbaseurl, b'/'.join(paths))
+            url = b'%s/%s' % (self.req.baseurl, b'/'.join(paths))
 
             #url = b'http://example.com/%s' % self.key
             self.ui.log('simplecache', 'sending content redirect for %s to '