make 'bbh' a group name for flan cot 3-shot, add stopseqs

lm_eval/tasks/bbh/flan_cot_fewshot/_flan_cot_fewshot_template_yaml

-group: bbh_flan_cot_fewshot
+group:
+- bbh_flan_cot_fewshot
+- bbh
 dataset_path: lukaemon/bbh
 output_type: generate_until
 test_split: test
@@ -12,6 +14,8 @@ metric_list:
 generation_kwargs:
   until:
     - "</s>"
+    - "Q"
+    - "\n\n"
   do_sample: false
   temperature: 0.0
 filter_list:

lm_eval/tasks/bbh/flan_cot_zeroshot/_flan_cot_zeroshot_template_yaml

@@ -12,6 +12,8 @@ metric_list:
 generation_kwargs:
   until:
     - "</s>"
+    - "Q"
+    - "\n\n"
   do_sample: false
   temperature: 0.0
 filter_list:

lm_eval/tasks/bbh/flan_fewshot/_flan_fewshot_template_yaml

@@ -12,5 +12,7 @@ metric_list:
 generation_kwargs:
   until:
     - "</s>"
+    - "Q"
+    - "\n\n"
   do_sample: false
   temperature: 0.0

lm_eval/tasks/bbh/flan_zeroshot/_flan_zeroshot_template_yaml

@@ -12,5 +12,7 @@ metric_list:
 generation_kwargs:
   until:
     - "</s>"
+    - "Q:"
+    - "\n\n"
   do_sample: false
   temperature: 0.0