cc_test mixed builds: suffix bazel label with __tf_internal.

To support `b test //path/to:my_test` command line, the actual
executable in the cc_test macro now has the __tf_internal suffix in its
name, so that the top level test suite target can be named without any suffixes.

See other CLs in this topic for more info.

Test: presubmits
Fixes: 292159775
Change-Id: I2d0bfc4276717ae881f6f3eb6aefa88bb47f25da

cc/cc_test.go

@@ -3261,7 +3261,7 @@ func TestLibDepAndroidMkExportInMixedBuilds(t *testing.T) {
 							},
 						},
 						LabelToCcBinary: map[string]cquery.CcUnstrippedInfo{
-							"//:test": cquery.CcUnstrippedInfo{
+							"//:test__tf_internal": cquery.CcUnstrippedInfo{
 								CcAndroidMkInfo: tc.androidMkInfo,
 							},
 							"//:binary": cquery.CcUnstrippedInfo{