Extension API: Add interval for poll RSSI into config overlay

Bug: 135573686, 122133502, 136312816, 135572156

Test: atest com.android.server.wifi

Test: adb root
Test: adb shell cmd wifi get-poll-rssi-interval-msecs
Test: adb shell cmd wifi set-poll-rssi-interval-msecs 2000
Test: adb shell cmd wifi get-poll-rssi-interval-msecs
Test: adb shell cmd wifi set-poll-rssi-interval-msecs 5000
Test: adb shell cmd wifi get-poll-rssi-interval-msecs
Test: adb shell cmd wifi set-poll-rssi-interval-msecs 8000
Test: adb shell cmd wifi get-poll-rssi-interval-msecs

Change-Id: If1a23b7916071513c1a5446c5d339400a7b4624e
Signed-off-by: Mingguang Xu <mingguangxu@google.com>
4 files changed