Support hairpin NAT without going through docker server

Hairpin NAT is currently done by passing through the docker server.  If
two containers on the same box try to access each other through exposed
ports and using the host IP the current iptables rules will not match the
DNAT and thus the traffic goes to 'docker -d'

This change drops the restriction that DNAT traffic must not originate
from docker0.  It should be safe to drop this restriction because the
DOCKER chain is already gated by jumps that check for the destination
address to be a local address.

Docker-DCO-1.1-Signed-off-by: Darren Shepherd <darren.s.shepherd@gmail.com> (github: ibuildthecloud)
Resync the DCO text with upstream at http://developercertificate.org/

```
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
```

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Add authenticated TLS support for API

Docker-DCO-1.1-Signed-off-by: Johannes 'fish' Ziemke <github@freigeist.org> (github: discordianfish)
Add proper support for relative WORKDIR instructions

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Include instruction for AMI 2014.03

Include instructions to install Docker from Amazon's Software Repository on new AMI 2014.03 (Release Candidate)

Docker-DCO-1.1-Signed-off-by: Sebastien Stormacq <sebastien.stormacq@gmail.com> (github: sebsto)
Update fedora.rst

It looks like ``wmdocker`` does not have an update for Fedora 20:

```
~❯ pkgwat releases wmdocker
Starting new HTTPS connection (1): apps.fedoraproject.org
+---------------+----------------+-----------------+
| release       | stable_version | testing_version |
+---------------+----------------+-----------------+
| Rawhide       | 1.5-12.fc21    | None            |
| Fedora 20     | None           | None            |
| Fedora 19     | None           | None            |
| Fedora EPEL 7 | None           | None            |
| Fedora EPEL 6 | None           | None            |
| Fedora EPEL 5 | None           | None            |
+---------------+----------------+-----------------+
```

I'm not sure if the owner awjb is intending to create an F20 update or
not, but either way -- these docs are incorrect as currently written.

Docker-DCO-1.1-Signed-off-by: Ralph Bean <rbean@redhat.com> (github: ralphbean)
add no prune to rmi

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
update doc

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Add missing client doc

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Disable automatic killing of containers when docker stop fails

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)
fix tests

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
fix panic in monitor

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Merge pull request #4723 from vieux/fix_panic_monitor

fix panic in monitor
Add failing test case for issue #4681

Add a failing test case for an issue where docker is not creating a loopback device if networking is dissabled.

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)
Fix issue #4681 - No loopback interface within container when networking is disabled.

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)

Remove loopback code from veth strategy

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)

Looback strategy: Get rid of uneeded code in Create
Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)

Use append when building network strategy list

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)

Swap loopback and veth strategies in Networks list

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)

Revert "Swap loopback and veth strategies in Networks list"

This reverts commit 3b8b2c8454171d79bed5e9a80165172617e92fc7.

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)

When initializing networks, only return from the loop if there is an error

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)
Merge pull request #4689 from ralphbean/patch-1

Update fedora.rst
Refactor out interface specific information from execdriver.Network

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)
adding configuration for timeout and disable it by default

Docker-DCO-1.1-Signed-off-by: Isabel Jimenez <contact@isabeljimenez.com> (github: jimenez)
add softlayer installation instructions

Docker-DCO-1.1-Signed-off-by: Andrea Turli <andrea.turli@gmail.com> (github: andreaturli)
Merge pull request #4702 from timthelion/Issue#4681-1

Fix Issue#4681