Description of problem:
augtool does not seem to function properly when modifying multipath.conf

1. augtool -s set "/files/etc/multipath.conf/blacklist/wwid" ".*"
   error: Failed to execute command
   saving failed (run 'errors' for details)

1. augtool errors
   Error in /etc/multipath.conf:14.0 (parse_failed)
   Iterated lens matched less than it should
   Lens: /usr/share/augeas/lenses/dist/multipath.aug:133.10-.64:
   Last matched: /usr/share/augeas/lenses/dist/multipath.aug:24.24-.42:
   Next (no match): /usr/share/augeas/lenses/dist/multipath.aug:16.10-.37:

Version-Release number of selected component (if applicable):
augeas-1.12.0-8.el8.x86_64
augeas-libs-1.12.0-8.el8.x86_64

How reproducible:
100%

Steps to Reproduce:
1. install augeas device-mapper-multipath packages
2. mpathconf --enable
3. augtool -s set "/files/etc/multipath.conf/blacklist/wwid" ".*"

Actual results:
error

Expected results:
As seen on el9:
augeas-libs-1.13.0-3.el9.x86_64
augeas-1.13.0-3.el9.x86_64

1. augtool -s set "/files/etc/multipath.conf/blacklist/wwid" ".*"
   Saved 1 file(s)

1. cat /etc/multipath.conf
2. device-mapper-multipath configuration file

1. For a complete list of the default configuration values, run either:
2. # multipath -t
3. or
4. # multipathd show config

1. For a list of configuration options with descriptions, see the
2. multipath.conf man page.

defaults {
user_friendly_names yes
find_multipaths yes
}

blacklist {
wwid .*
}