ext4: add _require_ext4_mkfs_feature to check different features

ext4: add _require_ext4_mkfs_feature to check different features

1) We add _require_ext4_mkfs_feature to check the specified
   feature whether it is available in mkfs.ext4 or not.

2) We apply _require_ext4_mkfs_feature in ext4/003 and remove
   _require_mkfs_mkfs_bigalloc.

3) We add _require_ext4_mkfs_feature in ext4/306.  When 64bit
   feature is supported by mkfs.ext4, ext4/306 could skip.

Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>