
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
Use RHEL 7 cloud images as the baseline for built disk images.
Note: As of this writing, RHEL 7 is still in beta, so final download locations are not available. This element defaults to using the RHEL 6.5 image, but that will need to be overridden using the appropriate DIB_* environment variables to point at a RHEL 7 image.
For further details see the redhat-common README.