We need this https://github.com/openstack-infra/zuul/commit/c7370284742f2ed5c136d0e5fcd08ca2d23c8fe1 patch in preparation for gerrit 2.14 update T156120
On contint1001, the list of Python modules installed as Debian packages versus the ones embedded in our Zuul package via dh_virtualenv:
```
lang=diff
$ colordiff -U0 --label jessie <(pip freeze) --label=dh_virtualenv <(/usr/share/python/zuul/bin/pip freeze)
--- jessie
+++ dh_virtualenv
@@ -0,0 +1 @@
+APScheduler==3.0.6
@@ -2,0 +4 @@
+GitPython==2.0.8
@@ -25 +27,3 @@
-gear==0.5.5
+futures==3.0.5
+gear==0.7.0
+gitdb==0.6.4
@@ -28 +32 @@
-lockfile==0.8
+lockfile==0.12.2
@@ -32,0 +37 @@
+prettytable==0.7.2
@@ -38 +43 @@
-python-daemon==1.5.5
+python-daemon==2.0.6
@@ -50 +55,3 @@
-statsd==3.0.1
+smmap==0.9.0
+statsd==2.1.2
+tzlocal==1.2.2
@@ -54,0 +62 @@
+zuul==2.5.0-8-gcbc7f62-wmf4jessie1
```