Export PropertyInvalidatedCache SystemApis

Bug: 152453213
Tag: #refactor

Make selected APIs of PropertyInvalidatedCache system APIs for
mainline modules.  Only APIs that are believed to be needed by
Bluetooth have been exposed.  APIs used only by framework code have
not been exposed.

Export the following methods as system apis, visible only to mainline
modules.
    ctor public PropertyInvalidatedCache(int, @NonNull String, @NonNull String);
    method public boolean bypass(@NonNull Query);
    method public final void clear();
    method public final void disableLocal();
    method public final void invalidateCache();
    method public static void invalidateCache(@NonNull String);
    method public Result query(@NonNull Query);
    method public abstract Result recompute(@NonNull Query);

All APIs originally tagged @VisibleForTesting are now tagged @TestApi.

A CTS test for the class is in the next CL.

Test: atest PropertyInvalidatedCacheTests

Change-Id: Ica0f60d60aee0b2100cbb1ee93f00d7e0f4356ab