Update AppCompacted Action enum.

We added two new types of compaction: PERSISTENT and BFGS. These
are already plumbed through to statsd, but we should update the
proto.

(see I20af99e1932c262272388e99b79d12e8f10a1e07)

Test: statsd_testdrive 115
Bug: 119988524
Change-Id: Idae68693e16392e3ab025781e09daeb1e9de5359

cmds/statsd/src/atoms.proto

@@ -4919,6 +4919,8 @@ message AppCompacted {
     UNKNOWN = 0;
     SOME = 1;
     FULL = 2;
+    PERSISTENT = 3;
+    BFGS = 4;
   }
   optional Action action = 3;