VMware: Ensure test VM is running in rescue tests

Code was calling get_info() on test VM, but not using it. There are 2
options to fix this:

1. Use it
2. Don't call get_info()

I have chosen option 1.

This change adds a test on the data returned by get_info() which
ensures that the vm just created is in state power_state.RUNNING. The
code later tests that the vm is in state power_state.SHUTDOWN, so the
additional test that it was previously running reinforces that
rescue() caused the shutdown to happen.

Change-Id: Iec58b0dd40702d3bcebf339e9ada8b90a2229d5c
Merge "VMware: Ensure test VM is running in rescue tests"