Update "ubuntu-upstart" image with new "trusty"/"14.04" version

library/ubuntu-upstart

@@ -2,26 +2,30 @@
 
 # see also https://wiki.ubuntu.com/Releases#Current
 
-latest: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/12.04
-precise: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/12.04
-12.04: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/12.04
+latest: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/14.04
+trusty: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/14.04
+14.04: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/14.04
+# EOL: Apr 2019
+
+precise: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/12.04
+12.04: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/12.04
 # EOL: Apr 2017
 
 # TODO lucid/10.04 support
-#lucid: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/10.04
-#10.04: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/10.04
+#lucid: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/10.04
+#10.04: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/10.04
 # EOL: Apr 2015
 
 # ---
 
-quantal: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/12.10
-12.10: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/12.10
+quantal: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/12.10
+12.10: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/12.10
 # EOL: Apr 2014
 
-raring: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/13.04
-13.04: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/13.04
+raring: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/13.04
+13.04: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/13.04
 # EOL: Jan 2014
 
-saucy: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/13.10
-13.10: git://github.com/tianon/dockerfiles@e6a5cd2e84c8b28efb8b4ea9346d3d94f6af2c3a sbin-init/ubuntu/upstart/13.10
+saucy: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/13.10
+13.10: git://github.com/tianon/dockerfiles@e4b7cbaea20ba29771f6cbd427d4873abe54b3f4 sbin-init/ubuntu/upstart/13.10
 # EOL: Jul 2014