Merge ~cjwatson/txpkgupload:update-zope into txpkgupload:master

[Colin Watson]

Upgrade Zope stack

This adds Python 3 support to various packages.

Dependencies MP: https://code.launchpad.net/~cjwatson/txpkgupload/+git/dependencies/+merge/392805

[Ioana Lasc (ilasc)]

review: Approve

diff --git a/requirements.txt b/requirements.txt
index d1027b7..c069a2a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,6 +32,7 @@ oops-wsgi==0.0.12
 pbr==1.8.1
 pyasn1==0.1.6
 pycparser==2.18
+python-gettext==4.0
 python-mimeparse==0.1.4
 pytz==2017.2
 PyYAML==3.10
@@ -43,18 +44,21 @@ Twisted[conch]==18.4.0
 unittest2==1.0.1
 wadllib==1.3.2
 wsgi-intercept==0.5.1
-zope.browser==1.3
-zope.component==3.11.0
-zope.configuration==3.7.4
-zope.contenttype==3.5.5
-zope.event==3.5.2
-zope.exceptions==3.6.2
-zope.i18n==3.7.4
-zope.i18nmessageid==3.5.3
-zope.interface==4.4.3
-zope.location==3.9.1
-zope.proxy==3.6.1
-zope.publisher==3.12.6
-zope.schema==3.7.1
-zope.security==3.8.3
-zope.server==3.8.6
+zope.browser==2.3
+zope.component==4.6.1
+zope.configuration==4.4.0
+zope.contenttype==4.5.0
+zope.deferredimport==4.3.1
+zope.deprecation==4.4.0
+zope.event==4.4
+zope.exceptions==4.3
+zope.hookable==5.0.1
+zope.i18n==4.7.0
+zope.i18nmessageid==5.0.1
+zope.interface==5.0.2
+zope.location==4.2
+zope.proxy==4.3.5
+zope.publisher==5.2.0
+zope.schema==6.0.0
+zope.security==5.1.1
+zope.server==4.0.2