The geolocation provisioning adapter is not updating coordinates correctly

The geolocation provisioning adapter is not updating the geolocation of a node correctly when importing a requisition.

How to reproduce:

• Define a requisition with a node with city = Fulda
• Synchronize
• Verify on geographical Map
• Change city to Stuttgart (requisition -> edit -> node -> edit -> assets -> edit city)
• Synchronize
• Verify on geographical map

The longitude and latitude should be updated according to the asset fields.