We do not have any testing inside DIB for testing disk-image-create
logic. Lets do some smoke testing for all our supported image formats.
Also adding a run_functests.sh so we can extend this later without editing
the jenkins job.
Change-Id: Ie491e27f00bde54f73af6b47c9696ec04d973b14
It is an established convention to use DIB_IMAGE_CACHE in elements to
refer to the cache location. This convention has not been documented
in the README, unlike other element development practices. This change
adds documentation for DIB_IMAGE_CACHE both from an element user and
developer perspective.
This change was prompted by I76030654e7dfc7b7d4dfa87e082c14e7cee479b9
Change-Id: I6fcc2409450cdb45e5afcb292908fbaee1af258a
