[ADD] 增加observer-server中 extend配置，目前主要是 olap数据库

ob-server/cm-settings.yaml

@@ -38,3 +38,13 @@ data:
           poolSize: 100
       locker:
         redis:
+      extend: # 扩展配置
+        olapdb:
+          driver: clickhouse
+          addr: clickhouse.observe.svc.cluster.local:9000
+          debug: true
+          database: otel
+          username: default
+          password: cecf@cestong.com
+          maxOpenConns: 10
+          maxIdleConns: 5