tests/unit/test-qga: Replace the word 'blacklist' in the guest agent unit test

Let's use better, more inclusive wording here.

Message-Id: <20220727092135.302915-4-thuth@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/unit/test-qga.c

@@ -629,7 +629,7 @@ static void test_qga_get_time(gconstpointer fix)
     g_assert_cmpint(time, >, 0);
 }
 
-static void test_qga_blacklist(gconstpointer data)
+static void test_qga_blockedrpcs(gconstpointer data)
 {
     TestFixture fix;
     QDict *ret, *error;
@@ -637,7 +637,7 @@ static void test_qga_blacklist(gconstpointer data)
 
     fixture_setup(&fix, "-b guest-ping,guest-get-time", NULL);
 
-    /* check blacklist */
+    /* check blocked RPCs */
     ret = qmp_fd(fix.fd, "{'execute': 'guest-ping'}");
     g_assert_nonnull(ret);
     error = qdict_get_qdict(ret, "error");
@@ -968,7 +968,7 @@ int main(int argc, char **argv)
     g_test_add_data_func("/qga/fsfreeze-status", &fix,
                          test_qga_fsfreeze_status);
 
-    g_test_add_data_func("/qga/blacklist", NULL, test_qga_blacklist);
+    g_test_add_data_func("/qga/blockedrpcs", NULL, test_qga_blockedrpcs);
     g_test_add_data_func("/qga/config", NULL, test_qga_config);
     g_test_add_data_func("/qga/guest-exec", &fix, test_qga_guest_exec);
     g_test_add_data_func("/qga/guest-exec-invalid", &fix,