Function updateIED

Function to schema valid update name and other attribute(s) in IED element (rename IED)

The function makes sure to also
1. Update all elements with iedName attribute referenced to the IED.name
   attribute such as LNode, ClientLN, ExtRef, KDC, Association, ConnectedAP
2. Update all control block object references pointing to the IED
3. Updates IEDName elements text content
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