recommended update for canna
This recommended update for canna fixes the following issues:
- boo#910933: Canna service does not start
+ roll back the fix for bnc#878691
+ use wnn user instead of canna
+ fix the command line options in canna.service
+ use /bin/rm instead of cannakill in canna.service
- Fix wrong permission of systemd files
- Submitted by Fuminobu Takeyama (ftake)
Fixed bugs
bnc#910933
Canna can not start
bnc#878691
canna causes failure with systemctl status systemd-tmpfiles-setup -l - SLED12 Beta6