AY-745 - added collector for DL user credentials

Collects credentials if Project Settings have deadline authentication required.

client/ayon_core/modules/deadline/plugins/publish/collect_user_credentials.py

@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+"""Collect user credentials
+
+Requires:
+    context -> project_settings
+
+Provides:
+    context -> deadline_require_authentication (bool)
+    context -> deadline_auth (tuple (str, str)) - (username, password) or None
+"""
+import pyblish.api
+
+
+class CollectUserCredentials(pyblish.api.ContextPlugin):
+    """Collects user name and password for artist if DL requires authentication
+    """
+
+    # Run before collect_deadline_server_instance.
+    order = pyblish.api.CollectorOrder
+    label = "Collect Deadline User Credentials"
+
+    def process(self, context):
+        deadline_settings = context.data["project_settings"]["deadline"]
+
+        context.data["deadline_require_authentication"] = (
+            deadline_settings)["require_authentication"]
+        context.data["deadline_auth"] = None
+
+        if not context.data["deadline_require_authentication"]:
+            return
+
+        local_settings = deadline_settings["local_settings"]
+        context.data["deadline_auth"] = (local_settings["username"],
+                                         local_settings["password"])