I found an issue to forget to require zypp-plugin-python.
So I revised it.

And I divided etckeeper package into 3.
etckeeper - etckeepr main function.
etckeeper-cron - cron function.
etckeeper-pkgmanager-collabo - collabolation with package manager.

My test was finished.
Test report is
https://docs.google.com/spreadsheets/d/1kmtjqvCnqNMmuFHRLh0-xh1iBdjhxnvKoYgRK9VvAoc/pubhtml#

The package is
https://build.opensuse.org/package/show/home:Mitsutoshi:branches:utilities/etckeeper

Please see also:
http://lists.opensuse.org/archive/opensuse-factory/2014-07/msg00037.html
http://lists.opensuse.org/archive/opensuse-factory/2014-07/msg00052.html