Handle reservation requests with ID
Handle reservation requests with ID

- Write request results agains request ID
- Update functions to handle request ID
- Change writing results of requests to
  be done one property at a time:
  status > last change > result

bug: 36974469
Change-Id: I6105082d1b9e8978e150b0467af843101a0d30b1

jarekankowski/iosched,jarekankowski/iosched,jarekankowski/iosched,WeRockStar/iosched,WeRockStar/iosched,WeRockStar/iosched