feat(ql3): add opt-in security administration job

deploy/kubernetes/ql3-cluster/operations/security-administration/database-secret.example.yaml

@@ -0,0 +1,12 @@
+# Generic PostgreSQL example only. CloudNativePG users do not need this Secret.
+apiVersion: v1
+kind: Secret
+metadata:
+  name: ql3-security-administration-database
+  namespace: qinglong3-system
+type: Opaque
+immutable: true
+stringData:
+  postgres-admin-url: postgresql://ql3_admin:REPLACE@postgres.example.test:5432/qinglong
+  postgres-tls-servername: postgres.example.test
+  postgres-ca.crt: REPLACE_WITH_POSTGRES_CA_CERTIFICATE