These metrics where changed in a previous PR: #15770
This PR adjusts the metrics names and documents the changes.
Each of the metrics below is a family of metrics starting with such prefix.
New metrics:
daml_index_db_flat_transactions_stream_translation
daml_index_db_flat_transactions_stream_fetch_event_consuming_ids_stakeholder
daml_index_db_flat_transactions_stream_fetch_event_consuming_payloads
daml_index_db_flat_transactions_stream_fetch_event_create_ids_stakeholder
daml_index_db_flat_transactions_stream_fetch_event_create_payloads
daml_index_db_tree_transactions_stream_translation
daml_index_db_tree_transactions_stream_fetch_event_consuming_ids_non_stakeholder
daml_index_db_tree_transactions_stream_fetch_event_consuming_ids_stakeholder
daml_index_db_tree_transactions_stream_fetch_event_consuming_payloads
daml_index_db_tree_transactions_stream_fetch_event_create_ids_non_stakeholder
daml_index_db_tree_transactions_stream_fetch_event_create_ids_stakeholder
daml_index_db_tree_transactions_stream_fetch_event_create_payloads
daml_index_db_tree_transactions_stream_fetch_event_non_consuming_ids_informee
daml_index_db_tree_transactions_stream_fetch_event_non_consuming_payloads
Removed:
daml_index_db_get_flat_transactions
daml_index_db_get_transaction_trees