* lwm2m: fix bug Collected Value with different TS
* lwm2m: fix bug Collected Value with different TS, add constants
* lwm2m: fix bug SerDez - restore
* lwm2m: fix bug add ts value to toTsKvList
* lwm2m: add test sendCollected for actual ts
* lwm2m: refactoring test sendCollected for actual ts