This update for aaa_base fixes the following issues:

- DIR_COLORS (bug#1006973):

- add screen.xterm-256color
- add TERM rxvt-unicode-256color
- sort and merge TERM entries in etc/DIR_COLORS

- check for Packages.db and use this instead of Packages. (bsc#1171762)
- Rename path() to _path() to avoid using a general name.
- refresh_initrd call modprobe as /sbin/modprobe (bsc#1011548)
- etc/profile add some missing ;; in case esac statements
- profile and csh.login: on s390x set TERM to dumb on dumb terminal (bsc#1153946)
- backup-rpmdb: exit if zypper is running (bsc#1161239)
- Add color alias for ip command (jsc#sle-9880, jsc#SLE-7679, bsc#1153943)

This update was imported from the SUSE:SLE-15:Update update project.