Add compression level param to mapping (#483) (#484)

(cherry picked from commit 551c705)

Signed-off-by: Vijayan Balasubramanian <balasvij@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

vectorsearch/indices/faiss-index.json

@@ -24,6 +24,9 @@
           {%- if mode is defined %}
           "mode": "{{ mode }}",
           {%- endif %}
+          {%- if compression_level is defined %}
+          "compression_level": "{{ compression_level }}",
+          {%- endif %}
           {%- if train_model_id is defined %}
           "model_id": "{{ train_model_id }}"
           {%- else %}