Agent: rename PlannedShutdownException to PlannedShutdownError

This will stay consistent with python and our own codebase

monkey/infection_monkey/monkey.py

@@ -23,6 +23,7 @@ from infection_monkey.telemetry.messengers.legacy_telemetry_messenger_adapter im
 from infection_monkey.telemetry.state_telem import StateTelem
 from infection_monkey.telemetry.tunnel_telem import TunnelTelem
 from infection_monkey.utils.environment import is_windows_os
+from infection_monkey.utils.exceptions.planned_shutdown_error import PlannedShutdownError
 from infection_monkey.utils.monkey_dir import get_monkey_dir_path, remove_monkey_dir
 from infection_monkey.utils.monkey_log_path import get_monkey_log_path
 from infection_monkey.utils.signal_handler import register_signal_handlers

monkey/infection_monkey/utils/exceptions/planned_shutdown_error.py

@@ -0,0 +1,2 @@
+class PlannedShutdownError(Exception):
+    pass

monkey/infection_monkey/utils/signal_handler.py

@@ -3,7 +3,7 @@ import signal
 
 from infection_monkey.i_master import IMaster
 from infection_monkey.utils.environment import is_windows_os
-from infection_monkey.utils.exceptions.planned_shutdown_exception import PlannedShutdownException
+from infection_monkey.utils.exceptions.planned_shutdown_error import PlannedShutdownError
 
 logger = logging.getLogger(__name__)
 
@@ -16,7 +16,7 @@ class StopSignalHandler:
         self._handle_signal(signum)
         # Windows signal handlers must return boolean. Only raising this exception for POSIX
         # signals.
-        raise PlannedShutdownException("Monkey Agent got an interrupt signal")
+        raise PlannedShutdownError("Monkey Agent got an interrupt signal")
 
     def handle_windows_signals(self, signum):
         import win32con