Added hosting_utils.py

utils/hosting_utils.py

@@ -0,0 +1,11 @@
+from hosting.models import UserHostingKey
+
+
+def get_all_public_keys(customer):
+    """
+    Returns all the public keys of the user
+    :param customer: The customer whose public keys are needed
+    :return: A list of public keys
+    """
+    return UserHostingKey.objects.filter(
+        user__site__customuser=customer).values_list("public_key", flat=True)