Turn off flaky formencode test

which hits an external server

test/extra/formencode.patch

+--- src/formencode/formencode/validators.py.orig	2016-07-14 17:02:54.061523151 +0000
++++ src/formencode/formencode/validators.py	2016-07-14 17:03:55.577523151 +0000
+@@ -1394,14 +1394,10 @@
+         'http://google.com'
+         >>> u.to_python('google.com')
+         Traceback (most recent call last):
+             ...
+         Invalid: You must start your URL with http://, https://, etc
+-        >>> u.to_python('http://www.formencode.org/does/not/exist/page.html')
+-        Traceback (most recent call last):
+-            ...
+-        Invalid: The server responded that the page could not be found
+         >>> u.to_python('http://this.domain.does.not.exist.example.org/test.html')
+         ... # doctest: +ELLIPSIS
+         Traceback (most recent call last):
+             ...
+         Invalid: An error occured when trying to connect to the server: ...

test/extra/formencode_test.py

@@ -13,5 +13,7 @@ packages = ["nose==1.3.7", "pycountry==1.6", "pyDNS==2.3.6"]
 packages += ["-e", "git+https://github.com/formencode/formencode.git@1.2.5#egg=formencode"]
 create_virtenv(ENV_NAME, packages, force_create = True)
 
+subprocess.check_call(["patch", "-p1"], stdin=open(os.path.join(os.path.dirname(__file__), "formencode.patch")), cwd=SRC_DIR)
+
 expected = [{'ran': 201}]
 run_test([NOSETESTS_EXE], cwd=FORMENCODE_DIR, expected=expected)