Resizing of instance flavors (increasing the number of flavors available) to make VM provisioning more granular
Please see FIP-66 for more information - not all racks have been updated yet, only RENC - needs to be tested before other racks get the new flavor definitions.
Add sliver diff methods #128
Fixes the exception problem in #126
Addresses #129 - topology pruning based on element (node, component, ns, interface) modify state
This PR addresses a number of fixes: