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Build Identifier: 

Kernel is not being purge to 2 copies as specified

Reproducible: Always

Steps to Reproduce:
1. old kernels still present after reboot
2.
3.
Actual Results:  
After kernel update and reboot there are more than two kernels. zypp.conf
specifies 2 but there are 4 kernels and zipped copies of 4 more.

Expected Results:  
Still 4 kernels instead of two. Also vmlinuz link points to old kernel.

bob1@localhost:~> ls -l /boot/vmlin*
-rw-r--r-- 1 root root 7993788 May 14  2018
/boot/vmlinux-4.12.14-lp150.11-default.gz
-rw-r--r-- 1 root root 8026729 Oct  5 04:22
/boot/vmlinux-4.12.14-lp150.12.19-default.gz
-rw-r--r-- 1 root root 8028448 Oct 13 10:55
/boot/vmlinux-4.12.14-lp150.12.22-default.gz
-rw-r--r-- 1 root root 8031511 Nov  2 03:20
/boot/vmlinux-4.12.14-lp150.12.25-default.gz
lrwxrwxrwx 1 root root      32 Nov 10 18:05 /boot/vmlinuz ->
vmlinuz-4.12.14-lp150.11-default
-rw-r--r-- 1 root root 7028944 May 14  2018
/boot/vmlinuz-4.12.14-lp150.11-default
-rw-r--r-- 1 root root 7057520 Oct  5 04:47
/boot/vmlinuz-4.12.14-lp150.12.19-default
-rw-r--r-- 1 root root 7057520 Oct 13 11:24
/boot/vmlinuz-4.12.14-lp150.12.22-default
-rw-r--r-- 1 root root 7061616 Nov  2 03:44
/boot/vmlinuz-4.12.14-lp150.12.25-default

-------------
zypp.conf:

##
## Packages which can be installed in different versions at the same time.
##
## Packages are selected either by name, or by provides. In the later case
## the string must start with "provides:" immediately followed by the
capability.
##
## Example:
##      kernel                          - just packages whith name 'kernel'
##      provides:multiversion(kernel)   - all packages providing
'multiversion(kernel)'
##                                        (kenel and kmp packages should do
this)
## Valid values:
##      Comma separated list of packages.
##
## Default value:
##      empty
##
multiversion = provides:multiversion(kernel)

##
## Defining directory which may contain additional multiversion definitions.
##
## If the directory exists, each file in this directory is scanned, expecting
## one valid multiversion list entry per line. Empty lines and lines starting
## with '#' are ignored.
## ------------------------- [/etc/zypp/multiversion.d/example file begin]
-----------------------
## # An alternate way to enable kernel packages being
## # installed in parallel:
##
## provides:multiversion(kernel)
## ------------------------- [/etc/zypp/multiversion.d/example file end]
-----------------------
##
## Valid values: A directory
## Default value: {configdir}/multiversion.d
##
# multiversiondir = /etc/zypp/multiversion.d

## Comma separated list of kernel packages to keep installed in parallel, if
the
## above multiversion variable is set. Packages can be specified as
## 2.6.32.12-0.7 - Exact version to keep
## latest        - Keep kernel with the highest version number
## latest-N      - Keep kernel with the Nth highest version number
## running       - Keep the running kernel
## oldest        - Keep kernel with the lowest version number (the GA kernel)
## oldest+N      - Keep kernel with the Nth lowest version number
##
## Note: This entry is not evaluated by libzypp, but by the
##       purge-kernels service (via /sbin/purge-kernels).
##
## Default: Do not delete any kernels if multiversion =
provides:multiversion(kernel) is set
multiversion.kernels = latest,latest-1,running

since latest and running are the same after reboot there should be only two
versions:
 uname -a
Linux localhost 4.12.14-lp150.12.25-default #1 SMP Thu Nov 1 06:14:23 UTC 2018
(3fcf457) x86_64 x86_64 x86_64 GNU/Linux

systemd kernel-purge.service fails to run if I try to start it.:
>From /usr/lib/systemd/system/purge-kernels.service:
-------------------------------
[Unit]
Description=Purge old kernels
After=local-fs.target
ConditionPathExists=/boot/do_purge_kernels
ConditionPathIsReadWrite=/

[Service]
Type=oneshot
Nice=19
IOSchedulingClass=idle
ExecStartPre=/bin/rm -f /boot/do_purge_kernels
ExecStart=/sbin/purge-kernels

[Install]
WantedBy=multi-user.target
-------------------
note: /boot/do_purge_kernels does not exist.

Its says that it is one time but the kernels should be purged after every
kernel update. The forums indicate that they have the expected 2 kernels, so
why has this purge mechanism stopped working.  They are using up extra disk
space that is needed.