add apoc.rel.startNodeId() apoc.rel.endNodeId() for real and virtual relationships

[neo-technology-build-agent]

Issue by jexp Friday Dec 11, 2020 at 15:39 GMT Originally opened as https://github.com/neo4j-contrib/neo4j-apoc-procedures/issues/1753

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see apoc.rel.type()

https://github.com/neo4j-contrib/neo4j-apoc-procedures/blob/4.1/core/src/main/java/apoc/nodes/Nodes.java#L426