Allow statsd to access a new metadata directory

Test: m -j
Bug: 149838525
Change-Id: I8633d21feb827c67288eb2894bafae166b103f92
diff --git a/private/file_contexts b/private/file_contexts
index a35cfb4..f6a210f 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -549,6 +549,7 @@
 /data/misc/stats-active-metric(/.*)? u:object_r:stats_data_file:s0
 /data/misc/stats-data(/.*)?     u:object_r:stats_data_file:s0
 /data/misc/stats-service(/.*)?  u:object_r:stats_data_file:s0
+/data/misc/stats-metadata(/.*)? u:object_r:stats_data_file:s0
 /data/misc/systemkeys(/.*)?     u:object_r:systemkeys_data_file:s0
 /data/misc/textclassifier(/.*)?       u:object_r:textclassifier_data_file:s0
 /data/misc/train-info(/.*)?     u:object_r:stats_data_file:s0