When downloading the base image for the first time, the response
test expression fails with '[: 200: unexpected operator'. This is
caused by using '==' in the test expression, which is not supported
in sh scripts.
Fixes bug 1195030
Change-Id: I66260814cb591371dc5c10f8436f90c2f18d78cf
The fedora element downloads images too, so we should re-use the caching
code from the ubuntu element.
There doesn't seem to be other examples of code shared between root.d
scripts. In the fedora and dpkg elements we copy install-packages into
the chroot, but that model doesn't apply when we're running scripts
outside of the chroot. Seems sane to just run it directly from the bin/
dir in the temporary hooks directory.
Change-Id: Iaa6aca660042fea323cab4271633a4bdbbc271b8
