shared,ext4: move ext4-specific tests out of shared/

The tests shared/{001,003,004,272} test behaviour around the ext4's
journal.  As such, they are pointless to run on ext2, and ext3 no
longer is in kernels newer than 4.3.  (And most enterprise
distributions have been using ext4 to support the ext3 file system;
that capability has been around since 2.6.33.)  So we can move these
tests out of shared and into the ext4 class of tests:

	shared/001 --> ext4/036
	shared/003 --> ext4/037
	shared/004 --> ext4/038
	shared/272 --> ext4/039

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

tests/shared/group

@@ -3,10 +3,7 @@
 # - do not start group names with a digit
 # - comment line before each group is "new" description
 #
-001 auto quick
 002 auto metadata quick log
-003 auto quick
-004 auto quick
 005 dangerous_fuzzers
 006 auto enospc
 007 dangerous_fuzzers
@@ -15,6 +12,5 @@
 010 auto stress dedupe
 011 auto quick
 032 mkfs auto quick
-272 auto enospc rw
 289 auto quick
 298 auto trim