feat: validate Nomad address URL for safety in cloud environment

- Added a check to validate the Nomad address URL when the application host is set to "cloud".
- Integrated the `validate_url_is_safe` function to ensure secure URL usage during Nomad token retrieval and secret synchronization.

Author: nimish-ks

backend/api/utils/syncing/nomad/main.py

@@ -1,6 +1,8 @@
 from api.utils.syncing.auth import get_credentials
 import requests
 import re
+from django.conf import settings
+from api.utils.network import validate_url_is_safe
 
 
 def get_nomad_token_info(credential_id):
@@ -11,6 +13,9 @@ def get_nomad_token_info(credential_id):
     NOMAD_ADDR = credentials["nomad_addr"]
     NOMAD_TOKEN = credentials["nomad_token_secret"]
 
+    if settings.APP_HOST == "cloud":
+        validate_url_is_safe(NOMAD_ADDR)
+
     session = requests.Session()
     session.headers.update(
         {
@@ -59,6 +64,9 @@ def sync_nomad_secrets(secrets, credential_id, path, namespace="default"):
         NOMAD_ADDR = credentials["nomad_addr"]
         NOMAD_TOKEN = credentials["nomad_token_secret"]
 
+        if settings.APP_HOST == "cloud":
+            validate_url_is_safe(NOMAD_ADDR)
+
         session = requests.Session()
         session.headers.update(
             {