Using WifiCommand to toggle the Wi-Fi state

Unable to turn ON the WiFi in Setup phase as there is a restriction for
setWifiEnabled only work for System Apps.

Bug: 147349850
Test: atest FrameworksCoreTests:DownloadManagerFunctionalTest

Change-Id: I452b81bcf72182c999d6f12c900860bf68fd910f
Signed-off-by: Naga Venkata Durga Ashok Mutyala <quic_nmutya@quicinc.com>