Merge ~cjwatson/txpkgupload:unittest-1.1.0+lp1 into txpkgupload:master

[Colin Watson]

Upgrade to unittest2 1.1.0+lp1

unittest2 was the only one of Launchpad's dependencies that couldn't be built into a wheel (see https://github.com/pypa/setuptools/issues/409), which was an annoying limitation that got in the way of making some other build system improvements. Switch to a local fork that fixes this.

Also add argparse 1.4.0, which is a setup_requires of unittest2. We probably only got away without it up to now because of a cached wheel somewhere.

Dependencies MP: https://code.launchpad.net/~cjwatson/txpkgupload/+git/dependencies/+merge/392803

[Ioana Lasc (ilasc)]

review: Approve

diff --git a/requirements.txt b/requirements.txt
index d1027b7..92d3714 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 appdirs==1.4.3
+argparse==1.4.0
 asn1crypto==0.23.0
 attrs==17.3.0
 Automat==0.6.0
@@ -40,7 +41,7 @@ testresources==0.2.7
 testtools==2.3.0
 traceback2==1.4.0
 Twisted[conch]==18.4.0
-unittest2==1.0.1
+unittest2==1.1.0+lp1
 wadllib==1.3.2
 wsgi-intercept==0.5.1
 zope.browser==1.3