Calculate expected number of vcpus/mem

Rather than just wait for a single vcpu or a non-zero amount of
memory to be available, we should look at the baremetal flavor and
figure out how many of each we should expect.

Closes-Bug: #1341634

Change-Id: I9d9ce55de3b9ad0f94d087179b9432e9e9e50d74
Merge "Calculate expected number of vcpus/mem"