The URL we were using to download lsb_release from no longer works,
install from package so this is not affected by disappearing URL's
in future.
This was originally installed from a URL because the package dependencies
caused a 87M increase in the size of the base image. For fedora the
increase is now 27M which is a little more tolerable.
Change-Id: I6e56a4a81786b33c5c6b92df2bd8236cd3f19670
Updates additional elements in diskimage-builder to use the declarative
package install support provided by the package-installs element.
package-installs does not yet support the pkg-map functionality, so
elements using pkg-map are not migrated. That support will come in the
near future.
Change-Id: I3d36adad317ba44326eabd95243d45807e2a8a16
