Bug 1638945 - Switch default 'mach try auto' strategy from bugbug_reduced to bugbug_debug_disperse. r=ahal

Differential Revision: https://phabricator.services.mozilla.com/D75969

tools/tryselect/selectors/auto.py

@@ -29,7 +29,7 @@ def run(message='{msg}', push=True, closed_tree=False, try_config=None):
     # XXX Remove once an intelligent scheduling algorithm is running on
     # autoland by default. This ensures `mach try auto` doesn't run SETA.
     try_config.setdefault('optimize-strategies',
-                          'taskgraph.optimize:tryselect.bugbug_reduced')
+                          'taskgraph.optimize:tryselect.bugbug_debug_disperse')
 
     task_config = {
         'version': 2,

tools/tryselect/test/test_auto.t

@@ -17,7 +17,7 @@ Test auto selector
           "target_tasks_method": "try_auto",
           "try_mode": "try_auto",
           "try_task_config": {
-              "optimize-strategies": "taskgraph.optimize:tryselect.bugbug_reduced"
+              "optimize-strategies": "taskgraph.optimize:tryselect.bugbug_debug_disperse"
           }
       },
       "version": 2
@@ -37,7 +37,7 @@ Test auto selector
           "target_tasks_method": "try_auto",
           "try_mode": "try_auto",
           "try_task_config": {
-              "optimize-strategies": "taskgraph.optimize:tryselect.bugbug_reduced"
+              "optimize-strategies": "taskgraph.optimize:tryselect.bugbug_debug_disperse"
           }
       },
       "version": 2
@@ -56,7 +56,7 @@ Test auto selector
           "target_tasks_method": "try_auto",
           "try_mode": "try_auto",
           "try_task_config": {
-              "optimize-strategies": "taskgraph.optimize:tryselect.bugbug_reduced"
+              "optimize-strategies": "taskgraph.optimize:tryselect.bugbug_debug_disperse"
           }
       },
       "version": 2