Migrate examples to tests_e2e directory structure

- Relocated all files and scripts from `examples` to `tests_e2e` for better organization.
- Updated references and paths in configurations, scripts, and test files.
- Adjusted `bump-version.sh` to handle the new `tests_e2e` structure.
- Updated `.gitignore` to reflect path changes.

tests_e2e/swarm/portainer.yml

@@ -0,0 +1,67 @@
+# ==============================================================================
+# EXAMPLE: Portainer Behind EasyHAProxy (Swarm)
+# ==============================================================================
+#
+# WHAT THIS DEMONSTRATES:
+# - Running Portainer management UI in Swarm mode
+# - Service discovery with EasyHAProxy
+# - Using persistent volumes for Portainer data
+#
+# REQUIREMENTS (run these first):
+# ```bash
+# # Ensure EasyHAProxy is deployed
+# docker stack deploy -c easyhaproxy.yml easyhaproxy
+#
+# # Add to /etc/hosts (idempotent)
+# grep -q "portainer.local" /etc/hosts || echo "127.0.0.1 portainer.local" | sudo tee -a /etc/hosts
+# ```
+#
+# HOW TO START:
+# ```bash
+# docker stack deploy -c portainer.yml portainer
+# ```
+#
+# HOW TO VERIFY IT'S WORKING:
+# ```bash
+# # Check service is running
+# docker service ls | grep portainer
+# # Expected: portainer_portainer with 1/1 replicas
+#
+# # Access Portainer
+# curl http://portainer.local
+# # Or open in browser: http://portainer.local
+# # First time: Create admin user
+# ```
+#
+# CLEAN UP:
+# ```bash
+# docker stack rm portainer
+# # To also remove data volume:
+# # docker volume rm portainer_portainer_data
+# ```
+#
+# ==============================================================================
+
+services:
+  portainer:
+    image: portainer/portainer-ce:latest
+    volumes:
+     - portainer_data:/data portainer
+     - /var/run/docker.sock:/var/run/docker.sock
+    deploy:
+      replicas: 1
+      labels:
+        # easyhaproxy.http.redirect_ssl: true
+        # easyhaproxy.http.certbot: true
+        easyhaproxy.http.host: portainer.local
+        easyhaproxy.http.port: 80
+        easyhaproxy.http.localport: 9000
+
+volumes:
+  certs_certbot:
+    external: true
+  # certs_haproxy:
+  #   external: true
+  portainer_data:
+    # external: true
+