Update debian with 2015-06-08 debootstraps (especially for Debian 8.1)

[tianon]

No description provided.

[tianon]

Build test of #795; fb8738f (debian):

$ url="https://raw.githubusercontent.com/docker-library/official-images/fb8738f877f9cb25aef8fd9ab15be8c74c5bf76f/library/debian"
$ bashbrew build "$url"
Fetching debian (git://github.com/tianon/docker-brew-debian) ...
Fetching debian (git://github.com/tianon/dockerfiles) ...
Processing debian:8.1 ...
Processing debian:8 ...
Processing debian:jessie ...
Processing debian:latest ...
Processing debian:jessie-backports ...
Processing debian:oldstable ...
Processing debian:oldstable-backports ...
Processing debian:sid ...
Processing debian:6.0.10 ...
Processing debian:6.0 ...
Processing debian:6 ...
Processing debian:squeeze ...
Processing debian:stable ...
Processing debian:stable-backports ...
Processing debian:stretch ...
Processing debian:testing ...
Processing debian:unstable ...
Processing debian:7.8 ...
Processing debian:7 ...
Processing debian:wheezy ...
Processing debian:wheezy-backports ...
Processing debian:rc-buggy ...
Processing debian:experimental ...
$ bashbrew list --uniq "$url" | xargs test/run.sh
testing debian:8.1
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:jessie-backports
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:oldstable
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:oldstable-backports
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:sid
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:6.0.10
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:stable
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:stable-backports
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:stretch
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:testing
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:unstable
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:7.8
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:wheezy-backports
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:rc-buggy
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed
testing debian:experimental
    'utc' [1/4]...passed
    'cve-2014--shellshock' [2/4]...passed
    'no-root-password' [3/4]...passed
    'debian-apt-get' [4/4]...passed

[yosifkit]

LGTM