feat: add kubernetes autodiscovery

Signed-off-by: Olblak <me@olblak.com>

assets/code_example/docs/plugins/autodiscovery/kubernetes/updatecli.d/updatecli.yaml

@@ -0,0 +1,22 @@
+name: "Kubernetes autodiscovery"
+scms:
+  default:
+    kind: git 
+    spec:
+      url: "https://github.com/jenkins-infra/release.git"
+      branch: master
+autodiscovery:
+  scmid: default
+  crawlers:
+    kubernetes:
+      digest: true
+      versionfilter:
+        kind: semver
+        pattern: minoronly
+      ## To ignore specific path
+      #ignore:
+      #  - images:
+      #      - "mcr.microsoft.com/dotnet/framework/sdk"
+      only:
+        - images:
+            - "mcr.microsoft.com/dotnet/framework/sdk"

content/en/docs/plugins/autodiscovery/kubernetes.adoc

@@ -0,0 +1,31 @@
+---
+title: "Kubernetes"
+description: "Discover Kubernetes container update"
+lead: "kind: kubernetes"
+draft: false
+images: [] 
+menu:
+    docs:
+        parent: "plugin-autodiscovery"
+weight: 130
+toc: true
+plugins:
+    - autodiscovery
+---
+
+== Description
+
+The `kubernetes` Autodiscovery plugin allows to automatically search and update container tags defined in Kubernetes.yaml files.
+
+=== Manifests
+==== Parameters
+
+{{< autodiscoveryparameters "kubernetes" >}}
+
+==== Example
+
+[source,yaml]
+----
+# updatecli.d/default.yaml
+{{<include "assets/code_example/docs/plugins/autodiscovery/kubernetes/updatecli.d/updatecli.yaml">}}
+----