E.g. Accessing hidden method
Landroid/net/TetheringManager$TetheringInterfaceRegexps;
->getTetherableWifiRegexs()Ljava/util/List; (blacklist, linking, denied)
Bug: 183459282
Test: atest MtsTetheringTest on both R and S platform
Ignore-AOSP-First: change already in AOSP.
Change-Id: I3c5f08615fcf897fac59f2493be5337f78c2fdc7