Synchronizing vCenter with the same Cluster names

[mixey101]

When synchronizing multiple vCenter instances, where Datacenter and Cluster names are identical, I encounter critical errors, and virtual machines are not added to NetBox.
ERROR: NetBox returned: PATCH /api/virtualization/clusters/3/ Bad Request
ERROR: NetBox returned body:
{'scope': ['4 devices are assigned as hosts for this cluster but are not in site SR1']}
ERROR: Request Failed for cluster.
Used data:
{'scope_id': 12, 'tags': [{'name': 'Source: SR1'}, {'name': 'NetBox-synced'}, {'name': 'Source: vc-sr1'}]}

[semx]

Reproduced end to end with two vcsim instances carrying identical datacenter/cluster names and fixed in #557 (awaiting @bb-Ricardo's look, since it changes cluster matching for multi-source setups): a same-named cluster kept by another configured source in a different site is no longer adopted, so each vCenter gets its own cluster and its hosts stay on it. Your setup needs distinct cluster_site_relation values per source, which you already have.