Update ubuntu

- `ubuntu:precise`: 20141210
- `ubuntu:trusty`: 20141210
- `ubuntu:utopic`: 20141210
- `ubuntu:vivid`: 20141214

library/ubuntu

@@ -4,19 +4,24 @@
 # see also https://wiki.ubuntu.com/Releases#Current
 
 # commits: (master..dist)
-#  - d87d411 20141204 tarballs
+#  - eb9cd8e Merge remote-tracking branch 'origin/master' into dist
+#  - 7a09fde Update tarballs
 
-12.04.5: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 precise
-12.04: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 precise
-precise: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 precise
+# 20141210
+12.04.5: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 precise
+12.04: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 precise
+precise: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 precise
 
-14.04.1: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 trusty
-14.04: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 trusty
-trusty: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 trusty
-latest: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 trusty
+# 20141210
+14.04.1: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 trusty
+14.04: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 trusty
+trusty: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 trusty
+latest: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 trusty
 
-14.10: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 utopic
-utopic: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 utopic
+# 20141210
+14.10: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 utopic
+utopic: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 utopic
 
-15.04: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 vivid
-vivid: git://github.com/tianon/docker-brew-ubuntu-core@d87d4118b02bdc65995387b83d6544e90ff55586 vivid
+# 20141214
+15.04: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 vivid
+vivid: git://github.com/tianon/docker-brew-ubuntu-core@7a09fdeb3d62057d74988cbb111eaf5c3ea247a2 vivid