OSMENG-1048 Implement day1 configuration for VDU

Day1 config implementation, arranging existing unit tests and imports
adding task and execution timeout policy for workflows in tests.

Change-Id: Ie5a2626eec01176723d8130576facbf4934d5285
Signed-off-by: Gulsum Atici <gulsum.atici@canonical.com>
19 files changed