[Android compile bots] Make lunch target part of the GS file name

This is to make sure compile bots on the same change do not use the same name.

NoTry: true
Bug: skia:8560
Change-Id: I8de6a6831a84f26b62b89e2af80878b09e8ea8e4
Reviewed-on: https://skia-review.googlesource.com/c/173100
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Eric Boren <borenet@google.com>

Author: rmistry

infra/bots/android_compile/trigger_wait_ac_task.py

@@ -74,7 +74,8 @@ def _write_to_storage(task):
 
 def _get_task_file_name(task):
   """Returns the file name of the compile task. Eg: ${issue}-${patchset}.json"""
-  return '%s-%s.json' % (task['issue'], task['patchset'])
+  return '%s-%s-%s.json' % (task['lunch_target'], task['issue'],
+                            task['patchset'])
 
 
 # Checks to see if task already exists in Google storage.