Improved documentation around argument default values and basic auth example

[Sovietaced]

It was surprisingly challenging for me to get going with basic auth. The default values of the arguments are not configured and it was not clear that I would have to explicitly disabling request signing in order to get basic auth to work (was receiving 403s).

[peterzhuamazon]

[Triage] Adding @prudhvigodithi to get more information on this.

[prudhvigodithi]

Hey @Sovietaced thanks for the feedback, can you please open a PR to fix this? Thank you

[Sovietaced]

Hey @Sovietaced thanks for the feedback, can you please open a PR to fix this?

Thank you

Yeah sure. Gimme a week.

[Sovietaced]

Given that this project uses terraform-plugin-docs to manage its documentation, it appears that the behavior to document the default value is not yet supported unfortunately. https://github.com/hashicorp/terraform-plugin-docs/issues/65

Feels absurd to me that the issue has been laying around for 2 years so I'll just work on adding a basic auth example :(

[Sovietaced]

Ready for review: https://github.com/opensearch-project/terraform-provider-opensearch/pull/114

[prudhvigodithi]

Thanks @Sovietaced I have assigned this issue to you.