Move to ubuntu 12.04.4

[Roman Vyalov]

Apply 12.04.4 repository , when building iso

 https://review.openstack.org/#/c/81508/

[Miroslav Anashkin (manashkin)]

ISO fuel-gerrit-5.0-250-2014-04-04_23-22-19.iso

Ubuntu installation failed with the following error message.
Apr 9 15:04:01 preseed: running preseed command preseed/early_command: /bin/mkdir /.ssh ; /bin/echo "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAxJDUo6GEgUura6+8dH2IVfqNBdDjIjaWMgSdCzp+DA1X7YPWvy8r3lwqHSqdavVWmoqVuoZouhx9sypcCZVM+LoFElUdhKVFk0XAjPkCJT+rvGATl
Apr 9 15:04:01 log-output: sed: /etc/ssh/sshd_config: No such file or directory

[Miroslav Anashkin (manashkin)]

And, yes Ubuntu stop message is
`Warning: Failure trying to runL chroot /target mount -t proc proc /proc`
While install logs show other messages.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/86962

[Dmitry Burmistrov (dburmistrov)]

Fix proposed to branch: master
Review: https://review.openstack.org/86877
Review: https://review.openstack.org/86962

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/86877
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=17f5a29eea7dd9ba5ceea02011ecaf6b0be6ff6d
Submitter: Jenkins
Branch: master

commit 17f5a29eea7dd9ba5ceea02011ecaf6b0be6ff6d
Author: Dmitry Burmistrov <email address hidden>
Date: Fri Apr 11 16:07:20 2014 +0400

    Move to ubuntu 12.04.4

    Closes-bug: #1294695

    Change-Id: I73dfff063fd95bc0676ac7aac3cd35d052e7f596

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/86962
Committed: https://git.openstack.org/cgit/stackforge/fuel-library/commit/?id=9ee280705edb09843a8b57dd7e82304de1545436
Submitter: Jenkins
Branch: master

commit 9ee280705edb09843a8b57dd7e82304de1545436
Author: Dmitry Burmistrov <email address hidden>
Date: Fri Apr 11 21:18:50 2014 +0400

    Move to Ubuntu 12.04.4

    Change-Id: I8a016743f6cf4827e9270957429f961ab11a4fc1
    Closes-bug: #1294695

[Andrey Sledzinskiy (asledzinskiy)]

verified on {"build_id": "2014-04-25_01-00-26", "mirantis": "yes", "build_number": "139", "nailgun_sha": "6b156d7434d0a70efe288cd8064d0ca90fed0737", "production": "prod", "ostf_sha": "134765fcb5a07dce0cd1bb399b2290c988c3c63b", "fuelmain_sha": "9939570720729dce22e635b0b9c9465e9d80661f", "astute_sha": "6e8fa4cc12968d7b468fc590b2f06bb59bf74511", "release": "5.0", "fuellib_sha": "ebc4b365dd60811e918c280a79631369a7afb868"}