allow init to run mke2fs tools to format partitions

Test: let fs_mgr format a damaged /data partition
Bug: 35219933
Change-Id: If92352ea7a70780e9d81ab10963d63e16b793792
(cherry picked from commit 5f573ab2aa8f566c723f4ddd576f8365dcaec191)
diff --git a/private/init.te b/private/init.te
index 726f138..5c23f66 100644
--- a/private/init.te
+++ b/private/init.te
@@ -6,6 +6,7 @@
 domain_trans(init, rootfs, charger)
 domain_trans(init, rootfs, healthd)
 domain_trans(init, rootfs, slideshow)
+domain_auto_trans(init, e2fs_exec, e2fs)
 recovery_only(`
   domain_trans(init, rootfs, adbd)
   domain_trans(init, rootfs, recovery)