add e2e test proxysql custom cfg

Signed-off-by: Mayank Shah <mayank.shah@percona.com>

Author: mayankshah1607

e2e-tests/proxysql-scheduler/compare/proxysql-cfg.sql

@@ -0,0 +1 @@
+4000

e2e-tests/proxysql-scheduler/compare/statefulset_some-name-proxysql.yml

@@ -110,6 +110,8 @@ spec:
               name: ssl
             - mountPath: /etc/proxysql/ssl-internal
               name: ssl-internal
+            - mountPath: /etc/proxysql/custom
+              name: config
             - mountPath: /opt/percona
               name: bin
         - args:
@@ -221,6 +223,11 @@ spec:
             defaultMode: 420
             optional: false
             secretName: some-name-ssl
+        - configMap:
+            defaultMode: 420
+            name: some-name-proxysql
+            optional: true
+          name: config
         - emptyDir: {}
           name: bin
   updateStrategy:

e2e-tests/proxysql-scheduler/conf/some-name.yml

@@ -44,3 +44,56 @@ spec:
         resources:
           requests:
             storage: 2Gi
+    configuration: |
+      datadir="/var/lib/proxysql"
+      admin_variables =
+      {
+        admin_credentials="admin:admin"
+        mysql_ifaces="0.0.0.0:6032"
+        refresh_interval=2000
+        restapi_enabled=true
+        restapi_port=6070
+
+        cluster_username="admin"
+        cluster_password="admin"
+        checksum_admin_variables=false
+        checksum_ldap_variables=false
+        checksum_mysql_variables=false
+        cluster_check_interval_ms=200
+        cluster_check_status_frequency=100
+        cluster_mysql_query_rules_save_to_disk=true
+        cluster_mysql_servers_save_to_disk=true
+        cluster_mysql_users_save_to_disk=true
+        cluster_proxysql_servers_save_to_disk=true
+        cluster_mysql_query_rules_diffs_before_sync=1
+        cluster_mysql_servers_diffs_before_sync=1
+        cluster_mysql_users_diffs_before_sync=1
+        cluster_proxysql_servers_diffs_before_sync=1
+      }
+
+      mysql_variables=
+      {
+        monitor_password="monitor"
+        monitor_galera_healthcheck_interval=1000
+        threads=2
+        max_connections=2048
+        default_query_delay=0
+        default_query_timeout=10000
+        poll_timeout=4000
+        interfaces="0.0.0.0:3306"
+        default_schema="information_schema"
+        stacksize=1048576
+        connect_timeout_server=10000
+        monitor_history=60000
+        monitor_connect_interval=20000
+        monitor_ping_interval=10000
+        ping_timeout_server=200
+        commands_stats=true
+        sessions_sort=true
+        have_ssl=false
+        ssl_p2s_ca=""
+        ssl_p2s_cert=""
+        ssl_p2s_key=""
+        ssl_p2s_cipher="ECDHE-RSA-AES128-GCM-SHA256"
+        default_authentication_plugin="caching_sha2_password"
+      }