Update DeploymentManagerInfo attributes
The April train release introduced a new spec to expand three attributes
of the DeploymentManager.
This commit implements these changes, adding the new attributes to the
DeploymentManager.
Test Plan:
1.Verified that the deployment manager list includes the new attributes
by default.
2.Verified that fetching a specific deployment manager responds as
expected.
Issue-ID: INF-468
Change-Id: I372f01fca970243d4b6421121b469786d5480e61
Signed-off-by: Zhang Rong(Jon) <rong.zhang@windriver.com>