Add hostside CTS tests for SoftApConfig redaction

Add hostside CTS tests to test for SoftApConfiguration being redacted
from TetheringInterface for apps that don't own that config.

Bug: 216524590
Test: atest CtsHostsideNetworkTests
Change-Id: I823c8e94cc6fe10c6118e7a694da368e585bbd69
7 files changed