Close-Bug: #1400535. Fix for bug (https://bugs.launchpad.net/juniperopenstack/+bug/1400535). The fix, updates the stats collection and purge interval and purges every 24 hours. This will ensure cmon stats and log tables dont grow in size and keep the data for a day

Change-Id: Ic3edcf950c347dae088a150264a9d3e2575e5da4