Update REST setting service name
Update REST setting service name

This change is needed due to recent change in the service name
from settings.service to phosphor-settings.service.

Change-Id: I20c441e7609011d3af32596059a3ccdd75aaef55
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation