added sigterm handler

pandora_agents/unix/plugins/autodiscover

@@ -22,12 +22,23 @@ try:
     from subprocess import PIPE
     from subprocess import DEVNULL
     from subprocess import getstatusoutput
+    import signal
 except ModuleNotFoundError as err:
     print("{} error: {}. Exiting...".format(argv[0], err), file=stderr)
     exit(1)
 
 module_list = []
-VERSION = "1.2"
+VERSION = "1.3"
+
+# Define a function to handle the SIGTERM signal
+def sigterm_handler(signum, frame):
+    print("Received SIGTERM signal. Cleaning up...")
+    # Perform any necessary cleanup or shutdown operations here
+    # ...
+
+    # Exit the script
+    sys.exit(0)
+signal.signal(signal.SIGTERM, sigterm_handler)
 
 def win_service(servicelist, option=False, memcpu=False):