bitbake: server/process: Ensure socket has a timeout set

We're seeing hangs in oe-selftest where server startup and shutdown are
racing. The assumption was a connect would timeout however no timeout is
set which can leave processes hanging. Set a short timeout for
the connection to avoid this.

(Bitbake rev: f02114cb70e8f6f1d32e19c02b758fe0aadecd19)

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

bitbake/lib/bb/server/process.py

@@ -474,6 +474,8 @@ def connectProcessServer(sockname, featureset):
     readfd = writefd = readfd1 = writefd1 = readfd2 = writefd2 = None
     eq = command_chan_recv = command_chan = None
 
+    sock.settimeout(2)
+
     try:
         try:
             os.chdir(os.path.dirname(sockname))