[orchdaemon]: Fixed sairedis record file rotation

What I did
Fix sonic-net/sonic-buildimage#8162

Moved sairedis record file rotation logic out of flush() to fix issue.

Why I did it
Sairedis record file was not releasing the file handle on rotation. This is because the file handle release was inside the flush() which was only being called if a select timeout was triggered. Moved the logic to its own function which is called in the start() loop.

How I verified it
Ran a script to fill log and verified that rotation was happening correctly.

Signed-off-by: Bryan Crossland bryan.crossland@target.com

orchagent/orchdaemon.h

@@ -48,6 +48,7 @@
 #include <sairedis.h>
 
 using namespace swss;
+extern bool gSaiRedisLogRotate;
 
 class OrchDaemon
 {