!4429 Keep silence for the exception of KeyboardInterrupt.

Merge pull request !4429 from ZhangQinghua/master1

mindspore/_extends/remote/kernel_build_server.py

@@ -47,7 +47,7 @@ class Messager:
                 res = res[0:len(res)-1]
             self.message = res
             logger.debug('[IN]', self.message)
-        except EOFError:
+        except (EOFError, KeyboardInterrupt):
             self.exit()
         finally:
             pass