This DHCP exit hook to shorten the system hostname on GCE was previously
installed by build-debian-cloud and bootstrap-vz, but seems to have been
inadvertently removed in commit c81045cc6e
as part of a broad cross-cloud cleanup. Again, this was caught by our
validation tests, and we might be done with the fixes at this point.
In this commit, I'm reinstating the hook with a name change and an
explanatory comment, to reduce the risk of this vanishing accidentally
in the future.
Change-Id: I4e7268f8b9ab3b2a7fc8b510898c6fbdd685aa53
* force kpartx to use synchronous mode, removing sleep(10)
* get image configuration, use it during tarball creation and registration
* add (non-working, path problems) image registration
* add cleaning of image from Google keys and repositories
* add NTP server address in manifest
* add preference for backport kernels in manifest
* disable IPv6
* correctly set host name
