core: refactor VdsUpdateRunTimeInfo to use diamond operator

VdsUpdateRunTimeInfo class has many members which are data structures.
Initialize them using the diamond operator makes the code a bit more
organized and shorter.

Change-Id: Ieb0d5f931aee3749a2aad46e34991b97e46ccf8e
Signed-off-by: Arik Hadas <ahadas@redhat.com>