2.4.5.1. Workflow Steps
1. For each bursting virtual datacenter, get powered-on vApps.
2. Try to upscale the vApp as detailed above.
3. If successful, go to the get vApp Tier 1 IPs workflow.
4. If the maximum number of virtual machine instances has been reached, add the vApp to a blacklist.
5. If no vApp can be upscaled, go to the instantiate a new vApp workflow.