Migrate configuration paths to /etc/easyhaproxy and improve health check support in E2E tests

- Refactored HAProxy configuration files, templates, and paths to use `/etc/easyhaproxy` instead of `/etc/haproxy`.
- Updated Dockerfile to generate DH params and placeholder certificates in the new configuration directory.
- Added health check support with timeout to `DockerComposeFixture` in E2E test utilities.
- Adjusted tests, templates, and plugins to use the new `Consts`-based configuration paths.
- Introduced pytest fixtures for environment isolation and temporary directory management.

tests_e2e/kubernetes/cloudflare.yml

@@ -27,7 +27,7 @@
 # # Edit your EasyHAProxy deployment and add:
 # #   volumeMounts:
 # #     - name: cloudflare-ips
-# #       mountPath: /etc/haproxy/cloudflare_ips.lst
+# #       mountPath: /etc/easyhaproxy/cloudflare_ips.lst
 # #       subPath: cloudflare_ips.lst
 # #   volumes:
 # #     - name: cloudflare-ips
@@ -121,7 +121,7 @@ metadata:
     # easyhaproxy.plugin.cloudflare.ip_list: "MTAuMC4wLjAvOAoxNzIuMTYuMC4wLzEyCjE5Mi4xNjguMC4wLzE2CjEyNy4wLjAuMQ=="
 
     # Optional: Specify custom IP list file path (only used if ip_list is not provided)
-    # easyhaproxy.plugin.cloudflare.ip_list_path: "/etc/haproxy/cloudflare_ips.lst"
+    # easyhaproxy.plugin.cloudflare.ip_list_path: "/etc/easyhaproxy/cloudflare_ips.lst"
   name: webapp-ingress-cloudflare
   namespace: default
 spec:

tests_e2e/kubernetes/jwt-validator.yml

@@ -6,7 +6,7 @@
 # There are three ways to provide the JWT public key:
 #
 # 1. pubkey_path - Mount a file and reference the path (requires ConfigMap or Volume)
-#    easyhaproxy.plugin.jwt_validator.pubkey_path: "/etc/haproxy/jwt_keys/api_pubkey.pem"
+#    easyhaproxy.plugin.jwt_validator.pubkey_path: "/etc/easyhaproxy/jwt_keys/api_pubkey.pem"
 #
 # 2. k8s_secret.pubkey - Reference a Kubernetes secret (RECOMMENDED)
 #    Auto-detect key (tries common variations):
@@ -141,7 +141,7 @@ metadata:
     easyhaproxy.plugin.jwt_validator.algorithm: "RS256"
     easyhaproxy.plugin.jwt_validator.issuer: "https://auth.example.com/"
     easyhaproxy.plugin.jwt_validator.audience: "https://api.example.com"
-    easyhaproxy.plugin.jwt_validator.pubkey_path: "/etc/haproxy/jwt_keys/api_pubkey.pem"
+    easyhaproxy.plugin.jwt_validator.pubkey_path: "/etc/easyhaproxy/jwt_keys/api_pubkey.pem"
   name: api-ingress-jwt
   namespace: default
 spec:

tests_e2e/kubernetes/plugins-combined.yml

@@ -187,7 +187,7 @@ metadata:
     easyhaproxy.plugin.jwt_validator.algorithm: "RS256"
     easyhaproxy.plugin.jwt_validator.issuer: "https://auth.example.com/"
     easyhaproxy.plugin.jwt_validator.audience: "https://api.example.com"
-    easyhaproxy.plugin.jwt_validator.pubkey_path: "/etc/haproxy/jwt_keys/api_pubkey.pem"
+    easyhaproxy.plugin.jwt_validator.pubkey_path: "/etc/easyhaproxy/jwt_keys/api_pubkey.pem"
     # Block internal paths
     easyhaproxy.plugin.deny_pages.paths: "/internal,/debug,/metrics"
     easyhaproxy.plugin.deny_pages.status_code: "403"