Enable ntriples load format for %load with Neptune Analytics (#671)

* Enable ntriples load format for %load with Neptune Analytics

* update changelog

Author: michaelnchin

ChangeLog.md

@@ -4,6 +4,7 @@ Starting with v1.31.6, this file will contain a record of major features and upd
 
 ## Upcoming
 
+- Enabled n-triples data for `%load` with Neptune Analytics ([Link to PR](https://github.com/aws/graph-notebook/pull/671))
 - Removed unused options from `%load`([Link to PR](https://github.com/aws/graph-notebook/pull/662))
 - Made EncryptionKey optional in Neptune CloudFormation template ([Link to PR](https://github.com/aws/graph-notebook/pull/663))
 

src/graph_notebook/neptune/client.py

@@ -69,8 +69,8 @@
 LOAD_JOB_MODES = [MODE_RESUME, MODE_NEW, MODE_AUTO]
 DB_LOAD_TYPES = ['bulk']
 ANALYTICS_LOAD_TYPES = ['incremental']
-VALID_INCREMENTAL_FORMATS = ['', FORMAT_CSV, FORMAT_OPENCYPHER]
-VALID_BULK_FORMATS = VALID_INCREMENTAL_FORMATS + [FORMAT_NTRIPLE, FORMAT_NQUADS, FORMAT_RDFXML, FORMAT_TURTLE]
+VALID_INCREMENTAL_FORMATS = ['', FORMAT_CSV, FORMAT_OPENCYPHER, FORMAT_NTRIPLE]
+VALID_BULK_FORMATS = VALID_INCREMENTAL_FORMATS + [FORMAT_NQUADS, FORMAT_RDFXML, FORMAT_TURTLE]
 PARALLELISM_OPTIONS = [PARALLELISM_LOW, PARALLELISM_MEDIUM, PARALLELISM_HIGH, PARALLELISM_OVERSUBSCRIBE]
 LOADER_ACTION = 'loader'