bump Go to 1.3.1

Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com>
docker ps: introducing filters

* starting with filtering for exit codes. `docker ps -a --filter 'exited=1'`
* API doc for filter parameter
* formatting filters for help usage
* tweaks for review

This requires https://github.com/dotcloud/docker/pull/4430

Docker-DCO-1.1-Signed-off-by: Vincent Batts <vbatts@redhat.com> (github: vbatts)
Fix deadlock on failed dial in UDP userland proxy

Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com>
Merge pull request #7559 from LK4D4/fix_udp_proxy_deadlock

Fix deadlock on failed dial in UDP userland proxy
Merge pull request #7553 from LK4D4/update_to_1.3.1

bump Go to 1.3.1
Merge pull request #6162 from vbatts/vbatts-ps_filter

docker ps: introducing filters
Allow setting of environment variables when importing docker images

We want to be able to set the container=docker environment
variable when we build RHEL docker images.  I believe there
will be other use cases where you might want to set
environment in base images.

Since you can do this in layered image, I see no reason not
to allow it in base images.

Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)