优化拉流代理逻辑，修复ffmpeg拉流代理鉴权

sql/2.6.9更新.sql

@@ -3,3 +3,6 @@ alter table wvp_device_channel
 
 alter table wvp_platform
     add auto_push_channel bool default false
+
+alter table wvp_stream_proxy
+    add stream_key varying(255)

sql/初始化.sql

@@ -244,6 +244,7 @@ create table wvp_stream_proxy (
                                   create_time character varying(50),
                                   name character varying(255),
                                   update_time character varying(50),
+                                  stream_key character varying(255),
                                   enable_disable_none_reader bool default false,
                                   constraint uk_stream_proxy_app_stream unique (app, stream)
 );