Return True if all nodes have collected the same items.

        If collections differ, this method returns False while logging
        the collection differences and posting collection errors to
        pytest_collectreport hook.

def _check_nodes_have_same_collection(self):
        """Return True if all nodes have collected the same items.

        If collections differ, this method returns False while logging
        the collection differences and posting collection errors to
        pytest_collectreport hook.
        """
        node_collection_items = list(self.node2collection.items())
        first_node, col = node_collection_items[0]
        same_collection = True
        for node, collection in node_collection_items[1:]:
            msg = report_collection_diff(
                col, collection, first_node.gateway.id, node.gateway.id
            )
            if msg:
                same_collection = False
                self.log(msg)
                if self.config is not None:
                    rep = CollectReport(
                        node.gateway.id, "failed", longrepr=msg, result=[]
                    )
                    self.config.hook.pytest_collectreport(report=rep)

        return same_collection