Update Ubuntu

- `ubuntu:precise`: 20161209
- `ubuntu:trusty`: 20170119
- `ubuntu:xenial`: 20170119
- `ubuntu:yakkety`: 20170104
- `ubuntu:zesty`: 20170118

library/ubuntu

@@ -8,34 +8,34 @@ GitFetch: refs/heads/dist
 # see also https://wiki.ubuntu.com/Releases#Current
 
 # commits: (master..dist)
-#  - 9c78896 Update tarballs
+#  - b6f1fe1 Update tarballs
 #    - `ubuntu:precise`: 20161209
-#    - `ubuntu:trusty`: 20161214
-#    - `ubuntu:xenial`: 20161213
-#    - `ubuntu:yakkety`: 20161213
-#    - `ubuntu:zesty`: 20161212
+#    - `ubuntu:trusty`: 20170119
+#    - `ubuntu:xenial`: 20170119
+#    - `ubuntu:yakkety`: 20170104
+#    - `ubuntu:zesty`: 20170118
 
 # 20161209
 Tags: 12.04.5, 12.04, precise-20161209, precise
-GitCommit: 9c78896fe39d5be95cc4a6ae6c0475599a1bc396
+GitCommit: b6f1fe19228e5b6b7aed98dcba02f18088282f90
 Directory: precise
 
-# 20161214
-Tags: 14.04.5, 14.04, trusty-20161214, trusty
-GitCommit: 9c78896fe39d5be95cc4a6ae6c0475599a1bc396
+# 20170119
+Tags: 14.04.5, 14.04, trusty-20170119, trusty
+GitCommit: b6f1fe19228e5b6b7aed98dcba02f18088282f90
 Directory: trusty
 
-# 20161213
-Tags: 16.04, xenial-20161213, xenial, latest
-GitCommit: 9c78896fe39d5be95cc4a6ae6c0475599a1bc396
+# 20170119
+Tags: 16.04, xenial-20170119, xenial, latest
+GitCommit: b6f1fe19228e5b6b7aed98dcba02f18088282f90
 Directory: xenial
 
-# 20161213
-Tags: 16.10, yakkety-20161213, yakkety
-GitCommit: 9c78896fe39d5be95cc4a6ae6c0475599a1bc396
+# 20170104
+Tags: 16.10, yakkety-20170104, yakkety
+GitCommit: b6f1fe19228e5b6b7aed98dcba02f18088282f90
 Directory: yakkety
 
-# 20161212
-Tags: 17.04, zesty-20161212, zesty, devel
-GitCommit: 9c78896fe39d5be95cc4a6ae6c0475599a1bc396
+# 20170118
+Tags: 17.04, zesty-20170118, zesty, devel
+GitCommit: b6f1fe19228e5b6b7aed98dcba02f18088282f90
 Directory: zesty