Invalid nailgun repo in containers in fuel master node

[Vadim Rovachev]

{"build_id": "2014-06-20_00-31-14", "mirantis": "yes", "build_number": "262", "ostf_sha": "2f30e5cab5bec1f1e2fd80e26e4da771a8ffe2d4", "nailgun_sha": "0c5e3b94fdd6bc9a50d5f840bf5151f95a23d908", "production": "docker", "api": "1.0", "fuelmain_sha": "4f547561532baf5f26733bf66db692dc5b61806d", "astute_sha": "694b5a55695e01e1c42185bfac9cc7a641a9bd48", "release": "5.1", "fuellib_sha": "25eb618a33a2ec87bc56f6bad16dc25b1837f0f0"}

Steps to reproduce.
1. Install fuel master iso.
2. ssh connecting to fuel master node.
3. Go to ostf container (# dockerctl shell ostf)
4. Install vim: http://paste.openstack.org/show/84689/

# cat /etc/yum.repos.d/nailgun.repo
[nailgun]
name=Nailgun Local Repo
baseurl=file:/var/www/nailgun/centos/fuelweb/x86_64
gpgcheck=0 yum clean all

To resolve:
change last line in /etc/yum.repos.d/nailgun.repo from "gpgcheck=0 yum clean all" to "gpgcheck=0"