move e2fs tools from /sbin to /system/bin

Test: let fs_mgr format a damaged /data partition
Bug: 35219933
Change-Id: I379567772c73e52f532a24acf640c21f2bab5c5b

private/file_contexts

@@ -17,8 +17,6 @@
 /charger            u:object_r:rootfs:s0
 /init               u:object_r:init_exec:s0
 /sbin(/.*)?         u:object_r:rootfs:s0
-/sbin/e2fsdroid     u:object_r:e2fs_exec:s0
-/sbin/mke2fs        u:object_r:e2fs_exec:s0
 
 # For kernel modules
 /lib(/.*)?          u:object_r:rootfs:s0
@@ -178,6 +176,8 @@
 #
 /system(/.*)?		u:object_r:system_file:s0
 /system/bin/atrace	u:object_r:atrace_exec:s0
+/system/bin/e2fsdroid		u:object_r:e2fs_exec:s0
+/system/bin/mke2fs		u:object_r:e2fs_exec:s0
 /system/bin/e2fsck	--	u:object_r:fsck_exec:s0
 /system/bin/fsck\.f2fs	--	u:object_r:fsck_exec:s0
 /system/bin/fsck_msdos	--	u:object_r:fsck_exec:s0