Keep builds around for 4 days instead of 2.

Gitbuilder-archive should have enough space and this will
help jobs to complete running if they get delayed over
the weekend.

Signed-off-by: Sandon Van Ness <sandon@inktank.com>
Have copy of backport deps in /srv instead of apt-cache.

Instead of pulling from /var/apt-cache (assuming the files
exist) instead run a apt-get --reinstall and copy files to
/srv/extras-backports and import for the repo from there.

Signed-off-by: Sandon Van Ness <sandon@inktank.com>
Remove submodule .git/config submodules for .gitmodules reimport.

When the submodules init is done it takes values from .gitmodules
and imports them into .git/config so when .gitmodules is updated
old values/URLs are sitll used. Instead remove the entries from
.git/config so they can be re-added from .gitmodules.
Clean repo after unsetting .git/config settings.


Signed-off-by: Sandon Van Ness <sandon@inktank.com>
Use format() for lsb codename or distro/verison string.


Signed-off-by: Sandon Van Ness <sandon@inktank.com>