[BUG] Otel Services Demo is broken

[spapadop]

What is the bug?
The "Otel Services Demo" that comes by default on cluster installation does not work. There is an error produced on creating index templates and then the dashboards are broken.

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Go to "Integrations"
2. Click on "Available"
3. Click on "Otel Services Demo"
4. Click on "Try It"
5. See the "Bad request" error produced

What is the expected behavior?
The "Try It" button should not produce any errors and the demo dashboards/visualisations should work.

What is your host/environment?

• OS: AlmaLinux
• Version 9.4
• OpenSearch version 2.15.0
• Plugins: all the default + repository-s3

Do you have any screenshots?

Do you have any additional context?
Checking the logs, it's likely that the wrong path is used in order to create the index templates. I see path=_component_template%2Fss4o_services-1.0.1-template&method=POST. Maybe here it should had been path=_index_template?

[YANG-DB]

@spapadop thanks for your comments - we will review and upload a fix to the otel demo catalog release repo

[YANG-DB]

The integration has updated with a getting started instruction of loading the dashboards