docs: make cert-manager and manifest installation a detail (#1099)

Co-authored-by: Giovanni Liva <giovanni.liva@dynatrace.com>
keptn · Mar 27, 2023 · 66b3f01 · 66b3f01
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diff --git a/docs/content/en/docs/getting-started.md b/docs/content/en/docs/getting-started.md
@@ -88,6 +88,11 @@ make install-observability
 make restart-lifecycle-toolkit
 ```
 
+> **Note:**
+To export traces to the OpenTelemetry Collector, you need a
+ [KeptnConfig Resource](https://github.com/keptn/lifecycle-toolkit/blob/main/examples/support/keptn/keptnconfig.yaml)
+ in the namespace where KLT is installed.
+
 ## The Demo Application
 
 For this demonstration, we use a slightly modified version of

diff --git a/docs/content/en/docs/snippets/tasks/install.md b/docs/content/en/docs/snippets/tasks/install.md
@@ -37,6 +37,12 @@ available [here](https://helm.sh/docs/helm/helm_get_values/)).
 
 The full list of available flags can be found in the [helm-charts](https://github.com/keptn/lifecycle-toolkit/blob/main/helm/chart/README.md).
 
+> **Note:**
+Installation of the Lifecycle Toolkit version 0.6.0 and lower is not supported via helm charts.
+
+<details>
+<summary>Install Keptn using Manifests</summary>
+
 All versions of the Lifecycle Toolkit can be installed using manifests,
 with a command like the following:
 
@@ -51,21 +57,4 @@ kubectl wait --for=condition=Available deployment/lifecycle-operator -n keptn-li
 
 The Lifecycle Toolkit and its dependencies are now installed and ready to use.
 
-> **Note:**
-Installation of the Lifecycle Toolkit version 0.6.0 and lower is not supported via helm charts.
-
-## Install version 0.6.0 and earlier
-
-You must first install *cert-manager* with the following commands:
-
-```shell
-kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.11.0/cert-manager.yaml
-kubectl wait --for=condition=Available deployment/cert-manager-webhook -n cert-manager --timeout=60s
-```
-
-After that, you can install the Lifecycle Toolkit `<oldversion>` with:
-
-```shell
-kubectl apply -f https://github.com/keptn/lifecycle-toolkit/releases/download/<oldversion>/manifest.yaml
-kubectl wait --for=condition=Available deployment/lifecycle-operator -n keptn-lifecycle-toolkit-system --timeout=120s
-```
+</details>