Sets loaded rule info to Rule instances
Sets loaded rule info to Rule instances

Policy Engine initializes Rule instances when Congress starts
if rules are persited in db. The bug is that Policy Engine only
loads persited rule string but doesn't set other infomation,
id, name and comment. This patch lets Policy Engine set the
lacked infomations to Rule instance.

Closes-Bug: #1507329
Change-Id: Id8354d9bff0d5b5938406473e2f344e726bd2f3c

openstack/congress,ramineni/my_congress,ramineni/my_congress,ramineni/my_congress,openstack/congress,ramineni/my_congress