WIP: Feat block user

Created by: eesaanatluri

This PR contains rabbitMQ agents that locks/unlocks the user from ssh and restricts the user jobs/lift restrictions on user jobs from getting to run state. It also contains a driver script/CLI that invokes the above described agents.

prod_rmq_agents/examples/user_auth.py

+#!/usr/bin/env python3
+import os
+import sys
+import subprocess
+
+sys.path.insert(1, os.path.join(sys.path[0], "../.."))
+import rc_util
+
+
+# During migration of this new script for ood
+# e.g. not all of users are in the db
+migration = True
+# migration = False  # uncomment after migration's done
+remote_user = sys.argv[1]
+
+result = rc_util.check_user(remote_user)
+
+if result == "ok":
+    print(remote_user)
+else:
+    if migration:
+        rc = subprocess.run(["getent", "passwd", remote_user]).returncode
+        if rc == 0:
+            rc_util.update_user(remote_user, "ok")
+            print(remote_user)
+            sys.exit()
+    print()