OP-2551 - added multiprocess override by env var

In case of multiple variants of AE, project setting might not be enough. Add MULTIPROCESS env var to specific app variant.

openpype/modules/default_modules/deadline/plugins/publish/submit_aftereffects_deadline.py

@@ -1,11 +1,14 @@
-from openpype.lib import abstract_submit_deadline
-from openpype.lib.abstract_submit_deadline import DeadlineJobInfo
-import pyblish.api
 import os
 import attr
 import getpass
+import pyblish.api
+
 from avalon import api
 
+from openpype.lib import abstract_submit_deadline
+from openpype.lib.abstract_submit_deadline import DeadlineJobInfo
+from openpype.lib import env_value_to_bool
+
 
 @attr.s
 class DeadlinePluginInfo():
@@ -116,7 +119,10 @@ class AfterEffectsSubmitDeadline(abstract_submit_deadline.AbstractSubmitDeadline
         deadline_plugin_info.Comp = self._instance.data["comp_name"]
         deadline_plugin_info.Version = self._instance.data["app_version"]
         # must be here because of DL AE plugin
-        deadline_plugin_info.MultiProcess = self.multiprocess
+        # added override of multiprocess by env var, if shouldn't be used for
+        # some app variant use MULTIPROCESS:false in Settings, default is True
+        env_multi = env_value_to_bool("MULTIPROCESS", default=True)
+        deadline_plugin_info.MultiProcess = env_multi and self.multiprocess
         deadline_plugin_info.SceneFile = self.scene_path
         deadline_plugin_info.Output = render_path.replace("\\", "/")
 

openpype/settings/defaults/system_settings/applications.json

@@ -1127,7 +1127,9 @@
                     "darwin": [],
                     "linux": []
                 },
-                "environment": {}
+                "environment": {
+                    "MULTIPROCESS": "No"
+                }
             }
         }
     },