Add new examples for adding artifactory plugins using secrets

examples/artifactory/plugins/README.md

@@ -0,0 +1,36 @@
+
+# Adding plugins as a secret
+
+You can deploy the user plugins as a Kubernetes Secret. You will need to download the plugins and create a secret out of it. 
+
+1. Download the required plugins
+```bash
+wget https://raw.githubusercontent.com/jfrog/artifactory-user-plugins/master/cleanup/artifactCleanup/artifactCleanup.json
+wget https://raw.githubusercontent.com/jfrog/artifactory-user-plugins/master/cleanup/artifactCleanup/artifactCleanup.groovy
+```
+**Note:** Refer plugins repository -> https://github.com/jfrog/artifactory-user-plugins/
+
+2. Create the Kubernetes secret.
+
+```bash
+kubectl create secret generic cleanup --from-file=artifactCleanup.groovy  --from-file=artifactCleanup.json
+```
+
+3. Create a plugin-values.yaml
+```
+artifactory:
+  ## List of secrets for Artifactory user plugins.
+  ## One Secret per plugin's files.
+  userPluginSecrets:
+   - cleanup
+  copyOnEveryStartup:
+    - source: /artifactory_bootstrap/plugins/*
+      target: etc/artifactory/plugins/
+```
+
+**Note:** `copyOnEveryStartup` is used to copy and overwrite the files from (`/artifactory_bootstrap/plugins folder` ) to `/opt/jfrog/artifactory/var/etc/artifactory/plugins` everytime the pod is restarted.
+
+4. Install with the plugin-values.yaml.
+```
+helm upgrade --install artifactory --namespace artifactory jfrog/artifactory -f plugin-values.yaml
+```