- Fix udev files ownership

* Add a patch to fix database soft corruption issues if the Docker dameon dies
in a bad state. There is a PR upstream to vendor Docker to have this fix as
well, but it probably won't get in until 1.11.2. bnc#964673
(https://github.com/docker/docker/pull/22765)
+ bnc964673-boltdb-metadata-recovery.patch

- Fix go version to 1.5 (bsc#977394)

- Add patch to fix vulnerability in Docker <= 1.11.0. This patch is upstream,
but was merged after the 1.11.0 merge window. CVE-2016-3697. bsc#976777.
+ cve-2016-3697-numeric-uid.patch
The upstream PR is here[1] and was vendored into Docker here[2].
[1]: https://github.com/opencontainers/runc/pull/708
[2]: https://github.com/docker/docker/pull/21665

- docker.spec: apply gcc5 socket patch also for sle12 and leap
because gcc5 has been updated there as well.
- docker.spec: add a "is_opensuse" check for the mount-secrets patch.
This way we can use this same package for opensuse.
- docker.spec: update warning to mention that /etc/sysconfig/docker is sourced
by the migration script.

- docker.spec: only Reccomends: the docker-image-migrator package as it is no
longer required for our ugly systemctl hacks.
- docker.spec: fix up documentation to refer to the script you need to run in
the migrator package.
- docker.spec: print a warning if you force the DOCKER_FORCE_INSTALL option.