Upgrade to VxWORKS 6.7
We are running VxWORKS 5.5 now, and this version is being deprecated in AD/Controls.
Subtasks will include:
- Running 6.7 on the test stand (which is technically a RRBPM node, but this seems like the right approach)
- Running 6.7 on one of the live nodes (probably at MI20)
- doing the rest of the nodes.