Bug 1430: Obtain config params from config system

This is a follow-up patch to obtain the various data store executor
config params from the config system intsead of system properties.

Change-Id: Ib7fa03f053d6165fdcb52300be9add8ebe80b2c2
Signed-off-by: tpantelis <tpanteli@brocade.com>
Merge "Bug 1430: Obtain config params from config system"