disable v2 api
[CBSER-25] update gdapi to 0.1.5
[CBSER-25] decrypt/encrypt contact file to do update job
[CBSER-25] Test case for V3
[CBSER-25] cache secret/iv in dynamodb for each user
[CBSER-25] add _contact_encrypt function
[CBSER-25] make write contact to file with encryption
change function referencing to encryption part
Merge branch 'CBSER-25'