Rename osc-functional to osc-dsvm-functional

Currently, the funcitonal tests are not being run since the name
'osc-functional' doesn't have dsvm, which is required for firing
off a devstack related job.

Change-Id: I1700e15ea093677a6d7bd1bed15bef8d0ab9588c
Merge "Rename osc-functional to osc-dsvm-functional"