Sync oslo libraries

performed update.sh ../pycadf from oslo-incubator

sync'ed to level: 368daacaa3f4a65352f3e0c66a939a496c14ecca

Change-Id: I1956702bea76eab3fecbf3ba04682451e5c4786a
Use oslo.serialization

Move to olso.serialization and update requirements and common.conf
appropriately.

Change-Id: If1abff0e8cf7c24a451c8d758e99bf143aa7a59f