Sync juno_utils.sh with internal CI

Sync scripts with platform-ci commit:
e625758457d115f95f54415bc886bb15961314ad

Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Change-Id: Ia825b8ce119743d2ad8a80bce5e07b8a358d4c2e
1 file changed