Revert "remove app_data_file execute"

This reverts commit b362474374afc402f65695252d30a008326c0eba.

Reason for revert:

android.jvmti.cts.JvmtiHostTest1906#testJvmti unittest failures.

Bug: 121333210
Bug: 112357170
Change-Id: I6e68855abaaaa1e9248265a468712fa8d70ffa74
Test: compiles and boots
diff --git a/private/ephemeral_app.te b/private/ephemeral_app.te
index 92fd325..4935f33 100644
--- a/private/ephemeral_app.te
+++ b/private/ephemeral_app.te
@@ -22,7 +22,7 @@
 # Some apps ship with shared libraries and binaries that they write out
 # to their sandbox directory and then execute.
 allow ephemeral_app privapp_data_file:file { r_file_perms execute };
-allow ephemeral_app app_data_file:file r_file_perms;
+allow ephemeral_app app_data_file:file     { r_file_perms execute };
 
 # Allow the renderscript compiler to be run.
 domain_auto_trans(ephemeral_app, rs_exec, rs)