Add zts-report.py to python shebang exclusion

Include zts-report.py is the __brp_mangle_shebangs_exclude_from
to resolve build failures in Fedora 28 and newer.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs#8020
Issue openzfs#7360

rpm/generic/zfs.spec.in

@@ -46,7 +46,7 @@
 #
 # Details: https://github.com/zfsonlinux/zfs/issues/7360
 #
-%global __brp_mangle_shebangs_exclude_from arc_summary.py|arcstat.py|dbufstat.py|test-runner.py
+%global __brp_mangle_shebangs_exclude_from arc_summary.py|arcstat.py|dbufstat.py|test-runner.py|zts-report.py
 
 # Generic enable switch for systemd
 %if %{with systemd}