Don't let autoplans be run manually
Summary: Ref T8096. Like stop/start, autoplans are pushed into the system from outside (normally by arc) so it doesn't make any sense to run them manually.
Test Plan:
- Tried to run an autoplan from web UI, got an error.
- Ran a normal plan from web UI.
- Tried to run an autoplan from CLI, got an error.
- Ran a noraml plan from CLI.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T8096
Differential Revision: https://secure.phabricator.com/D13844