return the runtime directory of the oozie instance . the directory is created under tmp and it is always a new directory per services initialization . concode_field_sep String OOZIE_HOME_DIR concode_elem_sep String CONF_SYSTEM_ID concode_elem_sep String systemId concode_elem_sep Services SERVICES concode_elem_sep String CONF_SERVICE_CLASSES concode_elem_sep String CONF_SYSTEM_MODE concode_elem_sep Configuration conf concode_elem_sep Map<Class<? extends Service>,Service> services concode_elem_sep String oozieHome concode_elem_sep String CONF_DELETE_RUNTIME_DIR concode_elem_sep String CONF_SERVICE_EXT_CLASSES concode_elem_sep SYSTEM_MODE systemMode concode_elem_sep String runtimeDir concode_elem_sep int MAX_SYSTEM_ID_LEN concode_field_sep void init concode_elem_sep void setService concode_elem_sep String getSystemId concode_elem_sep void setServiceInternal concode_elem_sep Configuration getConf concode_elem_sep void setOozieHome concode_elem_sep SYSTEM_MODE getSystemMode concode_elem_sep void setSystemMode concode_elem_sep T get concode_elem_sep Services get concode_elem_sep void destroy concode_elem_sep String createRuntimeDir concode_elem_sep String getOozieHome