update env example

mishards/.env.example

-DEBUG=False
+DEBUG=True
 
 WOSERVER=tcp://127.0.0.1:19530
 TESTING_WOSERVER=tcp://127.0.0.1:19530
-SERVER_PORT=19531
+SERVER_PORT=19532
+
+SD_PROVIDER=Static
 
 SD_NAMESPACE=xp
 SD_IN_CLUSTER=False
@@ -10,5 +12,21 @@ SD_POLL_INTERVAL=5
 SD_ROSERVER_POD_PATT=.*-ro-servers-.*
 SD_LABEL_SELECTOR=tier=ro-servers
 
+SD_STATIC_HOSTS=127.0.0.1
+
 SQLALCHEMY_DATABASE_URI=mysql+pymysql://root:root@127.0.0.1:3306/milvus?charset=utf8mb4
+#SQLALCHEMY_DATABASE_URI=sqlite:////tmp/milvus/db/meta.sqlite?check_same_thread=False
 SQL_ECHO=True
+
+TESTING=True
+#SQLALCHEMY_DATABASE_TEST_URI=mysql+pymysql://root:root@127.0.0.1:3306/milvus?charset=utf8mb4
+SQLALCHEMY_DATABASE_TEST_URI=sqlite:////tmp/milvus/db/meta.sqlite?check_same_thread=False
+SQL_TEST_ECHO=False
+
+TRACING_TYPE=jaeger
+TRACING_SERVICE_NAME=fortest
+TRACING_SAMPLER_TYPE=const
+TRACING_SAMPLER_PARAM=1
+TRACING_LOG_PAYLOAD=True
+#TRACING_SAMPLER_TYPE=probabilistic
+#TRACING_SAMPLER_PARAM=0.5