Update Ubuntu (especially to finally add zesty)

- `ubuntu:precise`: 20161123
- `ubuntu:trusty`: 20161123
- `ubuntu:xenial`: 20161121
- `ubuntu:yakkety`: 20161121
- `ubuntu:zesty`: 20161129.1

library/ubuntu

@@ -8,28 +8,34 @@ GitFetch: refs/heads/dist
 # see also https://wiki.ubuntu.com/Releases#Current
 
 # commits: (master..dist)
-#  - 4c7620d Update tarballs
-#    - `ubuntu:precise`: 20161102
-#    - `ubuntu:trusty`: 20161101
-#    - `ubuntu:xenial`: 20161114
-#    - `ubuntu:yakkety`: 20161104
-
-# 20161102
-Tags: 12.04.5, 12.04, precise-20161102, precise
-GitCommit: 4c7620da47ebd6e82febf6d01881943c9b219ebb
+#  - cf9d7a2 Update tarballs
+#    - `ubuntu:precise`: 20161123
+#    - `ubuntu:trusty`: 20161123
+#    - `ubuntu:xenial`: 20161121
+#    - `ubuntu:yakkety`: 20161121
+#    - `ubuntu:zesty`: 20161129.1
+
+# 20161123
+Tags: 12.04.5, 12.04, precise-20161123, precise
+GitCommit: cf9d7a2ee20c8a4706a05d1d7f1a1e25ae32ed39
 Directory: precise
 
-# 20161101
-Tags: 14.04.5, 14.04, trusty-20161101, trusty
-GitCommit: 4c7620da47ebd6e82febf6d01881943c9b219ebb
+# 20161123
+Tags: 14.04.5, 14.04, trusty-20161123, trusty
+GitCommit: cf9d7a2ee20c8a4706a05d1d7f1a1e25ae32ed39
 Directory: trusty
 
-# 20161114
-Tags: 16.04, xenial-20161114, xenial, latest
-GitCommit: 4c7620da47ebd6e82febf6d01881943c9b219ebb
+# 20161121
+Tags: 16.04, xenial-20161121, xenial, latest
+GitCommit: cf9d7a2ee20c8a4706a05d1d7f1a1e25ae32ed39
 Directory: xenial
 
-# 20161104
-Tags: 16.10, yakkety-20161104, yakkety
-GitCommit: 4c7620da47ebd6e82febf6d01881943c9b219ebb
+# 20161121
+Tags: 16.10, yakkety-20161121, yakkety
+GitCommit: cf9d7a2ee20c8a4706a05d1d7f1a1e25ae32ed39
 Directory: yakkety
+
+# 20161129.1
+Tags: 17.04, zesty-20161129.1, zesty, devel
+GitCommit: cf9d7a2ee20c8a4706a05d1d7f1a1e25ae32ed39
+Directory: zesty