Do not jarjar classes in the target package

Update the jarjar generator to avoid jarjaring the target package, as
classes inside it do not need to be moved to it, and update integration
tests to match new class names.

Test: atest CtsNetTestCasesLatestSdk FrameworksNetIntegrationTests
Change-Id: I60ffb9f4769b4b86d9205d92c3d8b3f6637d4560
diff --git a/tools/gen_jarjar.py b/tools/gen_jarjar.py
index 4c2cf54..2ff53fa 100755
--- a/tools/gen_jarjar.py
+++ b/tools/gen_jarjar.py
@@ -115,7 +115,8 @@
             jar_classes = _list_jar_classes(jar)
             jar_classes.sort()
             for clazz in jar_classes:
-                if (_get_toplevel_class(clazz) not in excluded_classes and
+                if (not clazz.startswith(args.prefix + '.') and
+                        _get_toplevel_class(clazz) not in excluded_classes and
                         not any(r.fullmatch(clazz) for r in exclude_regexes)):
                     outfile.write(f'rule {clazz} {args.prefix}.@0\n')
                     # Also include jarjar rules for unit tests of the class, so the package matches