Description of problem:
augeas fails to parse /etc/mke2fs.conf file on latest RHEL-9.0.0-20210803.1 compose. The following new lines are added into mke2fs.conf file.
rhel6_ext4 = {
features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize
inode_size = 256
enable_periodic_fsck = 1
default_mntopts = ""
}
rhel7_ext4 = {
features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,64bit
inode_size = 256
}
rhel8_ext4 = {
features = has_journal,extent,huge_file,flex_bg,metadata_csum,64bit,dir_nlink,extra_isize
inode_size = 256
}

Version-Release number of selected component (if applicable):
augeas-1.12.1-0.1.git18558bb.el9.x86_64
e2fsprogs-1.46.2-1.el9.x86_64

How reproducible:
100%

Steps:

1. On rhel9 host with RHEL-9.0.0-20210803.1 compose

1. augtool print /files/etc/mke2fs.conf

There is no output.

2.

1. augtool print /augeas//error | grep mke2fs.conf
   /augeas/files/etc/mke2fs.conf/error = "parse_failed"
   /augeas/files/etc/mke2fs.conf/error/pos = "384"
   /augeas/files/etc/mke2fs.conf/error/line = "17"
   /augeas/files/etc/mke2fs.conf/error/char = "0"
   /augeas/files/etc/mke2fs.conf/error/lens = "/usr/share/augeas/lenses/dist/mke2fs.aug:187.10-.57:"
   /augeas/files/etc/mke2fs.conf/error/message = "Get did not match entire input"

Actual results:
As above

Expected results:
augeas can parse /etc/mke2fs.conf file.

Additional info:
The same issue on RHEL-8.5.0