The other distro elements set DIB_RELEASE which allows the other
elements to know what distro release is being built during the
extra-data or environment.d phases.
Change-Id: I00bf13410ded5b678ebc66ff191891ed3cc80f4f
Default to only having cloud-init query Ec2 on first boot for Ubuntu,
until cloud-init has been SRU'd to fix the CloudSigma data source issue
that causes Trusty boots to hang.
Change-Id: Icb3734d5ae78f4a0a6c0fae1af4a2ce3c809308c
Partial-bug: #1316475
Updates the various operating system elements so that we
set the DISTRO_NAME variable for each distro.
This env var is used by bin/pkg-map to set the default
distribution name for package name mappings.
Change-Id: Ib4b05eb7191dd50d25799a0bac51fd15c01b74cb
