Bug 1302689 - Update waitress from 0.9.0 to 1.0.0

http://docs.pylonsproject.org/projects/waitress/en/latest/#change-history
https://github.com/Pylons/waitress/compare/v0.9.0...v1.0.0

requirements/dev.txt

@@ -26,7 +26,7 @@ py==1.4.31 --hash=sha256:4a3e4f3000c123835ac39cab5ccc510642153bc47bc1f13e2bbb530
 
 # Required by WebTest
 beautifulsoup4==4.5.1 --hash=sha256:bb3dba571c2f7ddcaf3e70ad8b67878a85ac41889dcba75a30b8f7b0b5960b6d
-waitress==0.9.0 --hash=sha256:57192b7b9f26eae770f5bbf5a3cfeb781011305b1b6ca79a59d769dc267989a2
+waitress==1.0.0 --hash=sha256:e27afdce0d4dc76d0f7cb515cbe7f87dc04a79e9797736412a85ce452f1e73d6
 WebOb==1.6.1 --hash=sha256:509ce06406bd9c63fc6fba4ea5e96d17f6080f126d6303d6ab583b5f20c3eced
 
 # Required by mock