RDKB-24640 : Adding selfheal to handle high 5GHz band utilization
RDKB-24640 : Adding selfheal to handle high 5GHz band utilization

Reason for change: Expanding current radiohealth.sh logic to
monitor 5GHz band utilization and take corrective action.
Test Procedure:
DUT should have "AutoChannelEnable" and "ChanUtilSelfHealEnable" set to "true" for 5GHz.
Verify whether the device is getting recovered from high 5G utilization.
Make sure, no regression to existing 2GH high util. selfheal logic.
Risks: Medium
Signed-off-by: Jismon_Joy@cable.comcast.com

(cherry picked from commit 7b1d6002ddb9d16e5b7a4919c9fdd439d6987e43)
(cherry picked from commit 01836d521d876fd605111478a1a1dfa2dfe6e084)

Change-Id: I8473e76dc968e66e4b2c69fa9f8eedcce77cdce0

rdkcmf/rdkb-CcspWifiAgent,rdkcmf/rdkb-CcspWifiAgent,rdkcmf/rdkb-CcspWifiAgent