WifiNetworkFactory: Handle new request while processing

Handle new network request while processing a previous request. Also,
refactored the resetState() method to ensure there is a single abort
method for the active request.

Bug: 113878056
Test: ./frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: I1e17b115f039036e069acde52d1f99cefe5f5b4d
3 files changed