bitbake: process: Ensure ConnectionReader/Writer have fileno() and close() methods

Expose the underlying close() and fileno() methods which allow connection
monitoring and cleanup.

(Bitbake rev: f79187f4ebfad7969be47b429995e7f7a3e33c1e)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/server/process.py

@@ -523,6 +523,10 @@ class ConnectionReader(object):
     def fileno(self):
         return self.reader.fileno()
 
+    def close(self):
+        return self.reader.close()
+
+
 class ConnectionWriter(object):
 
     def __init__(self, fd):
@@ -536,3 +540,8 @@ class ConnectionWriter(object):
         with self.wlock:
             self.writer.send_bytes(obj)
 
+    def fileno(self):
+        return self.writer.fileno()
+
+    def close(self):
+        return self.writer.close()