CAHC: need newer version of docker due to SELinux problems

[miabbott]

Recent composes of CAHC have this error in the logs:

libsemanage.semanage_direct_install_info: Overriding docker module at lower priority 100 with module at priority 400.
15:13:49 Re-declaration of boolean virt_sandbox_use_fusefs
15:13:49 Failed to create node
15:13:49 Bad boolean declaration at /etc/selinux/targeted/tmp/modules/100/virt/cil:159
15:13:49 /usr/sbin/semodule:  Failed!

This seems to arise from the version of selinux-policy-targeted that is being pulled in from the CentOS-CR repo.

@cgwalters suggested on IRC to use a newer version of docker to mitigate this.

Not sure which version to use...maybe something from projectatomic/docker?

[cgwalters]

Alternatively we might be able to drop out the virt-sig docker in favor of the Core rebuild.

[cgwalters]

Unfortunately, we can't easily do that as there's no repos for extras/rhel-atomic-rebuild that I'm aware of that use CR. I could do it of course, but CentOS will need to do it anyways, so we should ping them.

[jasonbrooks]

May not be worth messing w/ any further, but I did a test build w/ these excludes: #182

[cgwalters]

This is fixed (for now anyways).