Fixing track

Use variable instead of hard-coded 'latest'

Change-Id: I72bcf6f0ed7ef84aefde255d6ee877ead86836b6
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
(cherry picked from commit c598418ec0c5aadfb38aac91cccf28369a34f23c)
1 file changed