Set a limit on the number of networks that
can be added by non DO/PO/system apps.

Limit can be customized via an overlay.

Also fixes carrier network comparison in
removeExcessNetworks().

Bug: 244713323
Test: atest WifiConfigManagerTest
Updated-Overlayable: TRUE
Merged-In: Icd8da0674aa1bf2f6be2685aaeaccdec603eef7f
Change-Id: Icd8da0674aa1bf2f6be2685aaeaccdec603eef7f
(cherry picked from commit 813369c694329029cc59ed648a0b1d2ae2cdc0ad)
4 files changed