1.support more oxm_match fileds, 2.Fix the duplicate result for restful get api
Merge remote-tracking branches 'upstream/dev' and 'origin/dev' into trema-uds
Merge pull request #54 from hwchiu/trema-uds

Fix the duplicate result for /uds/getall
Temporary solution. We need a better one (#55)
fix the "return NoneType" bug
Merge pull request #56 from hwchiu/fixNoneBug

fix the "return NoneType" bug