tests: Filter out "Lifetime writes" from the dumpe2fs display

The Lifetime writes field will probably not be stable as we add new
features to e2fsprogs, so filter it out to avoid spurious test failures.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

tests/filter_dumpe2fs

@@ -8,6 +8,7 @@
 /^Directory Hash Seed:/d
 /^Next check after:/d
 /^Maximum mount count:/d
+/^Lifetime writes:/d
 /Reserved blocks uid:/s/ (user .*)//
 /Reserved blocks gid:/s/ (group .*)//
 /^  Checksum /d