1. DB schema change
vcpu/memory/hdd info were stored into Service table.
but reviewer pointed out to me creating new table is better
since Service table has too much columns.
2. Querying service table method
Querying the compute-node recode from DB, several method were
used to same purpose. Changed to use same method.
3. Removing unnecessary operation.
FixedIP no longer have host column.
I didnt find that, remove unnecessary operation from post_live_migration..
4. Test code
Modified testcode to fit following the above changes.
28bbe0e8fb