refactor wait-for functions for Rally

Use wait_for_status instead of wait_* functions (wait_for_delete, wait_is_ready, wait_for), so we need: 1. mark wait_for_delete, wait_is_ready, wait_for deprecated 2. replace wait_is_ready with wait_for_status 3. replace wait_for_delete 4. replace wait_for 5. remove wait_for_delete, wait_is_ready, wait_for from tas...