Disable IPv6 in Google Compute Engine

Not currently supported in the Google Compute Engine network, so except
for esoteric use cases there's no need to run the risk of software
handling this badly. With support in the kernel but missing in the
network, we've already seen one case of misleading error behavior that,
while not technically incorrect, made debugging more difficult.
Update gcutil to latest version
Shred ECDSA keys when bootstrapping, regenerate at 1st boot
Merge pull request #79 from andsens/ecdsa-fix

Shred ECDSA keys when bootstrapping, regenerate at 1st boot
Merge branch 'master' of git://github.com/andsens/build-debian-cloud
Update gcutil to 1.8.2
Merge pull request #80 from google/master

Minor updates from June 17th Google Compute Engine images
Merge branch 'master' of git://github.com/andsens/build-debian-cloud into github
Update preferred GCE kernel
Add LVM root volume support
Merge pull request #82 from ssgelm/new-lvm

Add LVM root volume support
Added description for lvm-root-volume plugin
Merge pull request #83 from google/master

Version bumps for 0723 Google Compute Engine images
ec2/11-attach-volume: Wait for volume to be available

Prevents this from happening:
    Run task: 10-create-volume
    The EBS volume id is vol-deadbeef
    Run task: 11-attach-volume
    IncorrectState: vol-deadbeef is not 'available'.
Merge pull request #85 from soult/master

ec2/11-attach-volume: Wait for volume to be available
Use new gcutil deb from Google's repository
Update URL of Google deb repository
Prefer newly released kernel on Google cloud
Merge pull request #99 from google/master

Commit corresponding to Google 20130816 images
Handle GPG key for Compute Engine apt repository

Google's repository is now GPG-signed, so builds for Google Compute Engine have
to handle the key for apt not to fail on the unknown key.