task_profiles.json: add taskprofile for dex2oat boot_complete policy

Since installation time is also critical and sometime we want a finer
control on its behavior for vendor. Instead of set dex2oat to background
group, add a new task profile.

The default policy is to mirror SP_BACKGROUND to be compatible with
legacy devices.

Test: Boot
Bug: 188947181
Signed-off-by: Wei Wang <wvw@google.com>
Change-Id: I7d5e113d1c368205f712eadad27775de226131ce
(cherry picked from commit 3745ce7aa8)

libprocessgroup/profiles/task_profiles.json

@@ -584,7 +584,7 @@
           }
         }
       ]
-    },
+    }
   ],
 
   "AggregateProfiles": [
@@ -635,6 +635,10 @@
     {
       "Name": "CPUSET_SP_RESTRICTED",
       "Profiles": [ "ServiceCapacityRestricted", "TimerSlackNormal" ]
+    },
+    {
+      "Name": "Dex2OatBootComplete",
+      "Profiles": [ "SCHED_SP_BACKGROUND" ]
     }
   ]
 }