Update for f29

In Fedora 29 dstat was merged with pcp-system-tools (see
https://pagure.io/fesco/issue/1956)

Work around a iscsi bug with external packages until we can get the
package fixed.

Obsolete F27

Change-Id: I2f16658c5a3e22cac70912a0f3ad65cdd7071a1e
6 files changed