WifiConnectivityManager: PNO retry for low RSSI network

Added an exponential back off retry mechanism for networks
found by PNO scan but rejected by QNS due to their low RSSI
values.

Bug: 28402107
Change-Id: I8a69afb3d22fbd2f479073e6087893c24e5a5d39
2 files changed
tree: 61d4727b22d82fcb0d57a4f605d63ae00eb4f42a
  1. service/
  2. tests/