oeqa/utils/httpserver: Reset SIGTERM handler

With bitbake-worker installing a SIGTERM handler, we now need to reset the one here
to ensure that when this process shuts down, it doesn't take the rest of the task
with it. This does appear to be the only place in OE that we have this problem.

(From OE-Core rev: e1ac67d6470dde70239ca0430b18ca0bffbc0295)

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

meta/lib/oeqa/utils/httpserver.py

@@ -5,6 +5,8 @@ import os
 class HTTPServer(SimpleHTTPServer.BaseHTTPServer.HTTPServer):
 
     def server_start(self, root_dir):
+        import signal
+        signal.signal(signal.SIGTERM, signal.SIG_DFL)
         os.chdir(root_dir)
         self.serve_forever()