fix(observability/instance): adjust drift

[mitterle-sit]

Description

With some of the newer versions the Observability Instance Ressource generates a lot of diff noise if a alert_config is specified.

 # module.observability.stackit_observability_instance.observability[0] will be updated in-place
  ~ resource "stackit_observability_instance" "observability" ***
      ~ alert_config                           = ***
          ~ global    = ***
              + opsgenie_api_key   = (sensitive value)
              + opsgenie_api_url   = (known after apply)
              ~ resolve_timeout    = "5m" -> (known after apply)
              ~ smtp_auth_identity = "*****" -> (known after apply)
              # Warning: this attribute value will no longer be marked as sensitive
              # after applying this change.
              ~ smtp_auth_password = (sensitive value)
              ~ smtp_auth_username = "*****" -> (known after apply)
              ~ smtp_from          = "[email protected]" -> (known after apply)
              ~ smtp_smart_host    = "*****" -> (known after apply)
          *** -> (known after apply)
            # (2 unchanged attributes hidden)
      ***
        id                                     = "redacted"
        name                                   = "redacted"
      ~ plan_id                                = "redacted" -> (known after apply)
        # (24 unchanged attributes hidden)
  ***

This issue tries to solve this noisiness.
If there are changes needed just let me know.

Checklist

• Issue was linked above
• Code format was applied: make fmt
• Examples were added / adjusted (see examples/ directory)
• Docs are up-to-date: make generate-docs (will be checked by CI)
• Unit tests got implemented or updated
• Acceptance tests got implemented or updated (see e.g. here)
• Unit tests are passing: make test (will be checked by CI)
• No linter issues: make lint (will be checked by CI)

[github-actions]

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[mitterle-sit]

Bump

[marceljk]

Thanks for your contributions! The send_resolve attribute in webhook_configs still creates some diffs, when it's not set in the configuration. This can be fixed when it's explicit set, as mentioned here by you #1003 (comment).

terraform-provider-stackit/stackit/internal/services/observability/instance/resource.go

Lines 734 to 749 in 1b7bc05

	"ms_teams": schema.BoolAttribute{
	Description: "Microsoft Teams webhooks require special handling, set this to true if the webhook is for Microsoft Teams.",
	Optional: true,
	Computed: true,
	Default: booldefault.StaticBool(false),
	},
	"google_chat": schema.BoolAttribute{
	Description: "Google Chat webhooks require special handling, set this to true if the webhook is for Google Chat.",
	Optional: true,
	Computed: true,
	Default: booldefault.StaticBool(false),
	},
	"send_resolved": schema.BoolAttribute{
	Description: "Whether to notify about resolved alerts.",
	Optional: true,
	},

Could you set it to computed and default: true, similar like it's done for google_chat and ms_teams? This would probably fix this issue #1003