improve skinny behavior in HA deployment

src/mod/endpoints/mod_skinny/mod_skinny.c

@@ -1995,10 +1995,10 @@ static switch_status_t load_skinny_config(void)
 				
 				
 				if ((dbh = skinny_get_db_handle(profile))) {
-					switch_cache_db_test_reactive(dbh, "DELETE FROM skinny_devices", "DROP TABLE skinny_devices", devices_sql);
-					switch_cache_db_test_reactive(dbh, "DELETE FROM skinny_lines", "DROP TABLE skinny_lines", lines_sql);
-					switch_cache_db_test_reactive(dbh, "DELETE FROM skinny_buttons", "DROP TABLE skinny_buttons", buttons_sql);
-					switch_cache_db_test_reactive(dbh, "DELETE FROM skinny_active_lines", "DROP TABLE skinny_active_lines", active_lines_sql);
+					switch_cache_db_test_reactive(dbh, "select count(*) from skinny_devices", NULL, devices_sql);
+					switch_cache_db_test_reactive(dbh, "select count(*) from skinny_lines", NULL, lines_sql);
+					switch_cache_db_test_reactive(dbh, "select count(*) from skinny_buttons", NULL, buttons_sql);
+					switch_cache_db_test_reactive(dbh, "select count(*) from skinny_active_lines", NULL, active_lines_sql);
 					switch_cache_db_release_db_handle(&dbh);
 				}