bitbake: process: Show command exceptions in the server log as well

There are autobuilder logs where the server commands are failing
but we have no debug info in the server log. Improve this to try and
understand what is failing.

(Bitbake rev: 04d3a79226c9ea448b22f4efbab33876a72c9bdb)

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

bitbake/lib/bb/server/process.py

@@ -217,6 +217,7 @@ class ProcessServer():
                     self.command_channel_reply.send(self.cooker.command.runCommand(command))
                     serverlog("Command Completed")
                 except Exception as e:
+                   serverlog('Exception in server main event loop running command %s (%s)' % (command, str(e)))
                    logger.exception('Exception in server main event loop running command %s (%s)' % (command, str(e)))
 
             if self.xmlrpc in ready: