Add vCPU topology related extra flavor keys

Since there is support to define default parameters for the vCPU
topology using flavor extra specs in nova now, it will be very nice
to add these extra flavor keys to local_settings.py.example

Change-Id: I008ae27f1c47191d7fa08130f61cc46a205cb22d
Closes-bug: 1349931
Imported Translations from Transifex

Change-Id: I171ba7fe7c5a35f3c8aafb1708722411dd94e84e
Merge "Add vCPU topology related extra flavor keys"
Merge "Imported Translations from Transifex"