Creating a new vault manager class within vault.py, so that sysinv can
interact with the new vault manager helm chart. The get_override
function is modified so that the new vault manager fluxcd override is
properly applied.
Test Plan:
PASS AIO-SX vault sanity
PASS AIO-DX plus 1 worker vault fresh install and sanity
PASS Vault HA test for AIO-DX plus 1 worker
PASS Disable new vault manager helm chart with system
helm-chart-attribute-modify
Story: 2010929
Task: 49600
Change-Id: I71f0050a9cfd1be1c867f13926c84827d74f71de
Signed-off-by: Tae Park <tae.park@windriver.com>
b00a768784