Implemented key categorization to distinguish between keys set only during server creation and those that can be updated

agent.py

@@ -4,6 +4,24 @@ import logging
 import json
 import http.client
 
+NON_UPDATABLE_KEYS = [
+    'server_type',
+    'os_id',
+    'provider_id',
+    'location_id',
+    'ssh_port', 
+    'bandwidth', 
+    'was_promo',
+    'active',
+    'show_public',
+    'owned_since', 
+    'currency', 
+    'price', 
+    'payment_term', 
+    'next_due_date',
+    'ip1'
+]
+
 class ServerData:
     def __init__(self):
         self.hostname = os.uname().nodename
@@ -110,7 +128,7 @@ class ServerManager:
 
     def update_server(self, post_data, server_id):
         # remove following keys from post_data
-        for key in ['ssh_port', 'ip1', 'currency', 'price', 'payment_term', 'next_due_date']:
+        for key in NON_UPDATABLE_KEYS:
             post_data.pop(key, None)
         logging.info(f"Updating server with id {server_id}...")
         return self.send_request('PUT', '/api/servers/' + str(server_id), post_data)