Add trigger for restarting on pyghmi updates

Often times, a pyghmi update carries the substance of
a patch.  Instead of a person having to remember to
manually restart, try to trigger an update to restart
confluent automatically.

confluent_server/confluent/__init__.py

@@ -0,0 +1 @@
+__version__ = "1.5.0.dev395.ggacb3a20"

confluent_server/confluent_server.spec.tmpl

@@ -33,6 +33,10 @@ done
 grep -v confluent/__init__.py INSTALLED_FILES.bare > INSTALLED_FILES
 cat INSTALLED_FILES
 
+%triggerin -- python-pyghmi
+if [ -x /usr/bin/systemctl ]; then /usr/bin/systemctl try-restart confluent >& /dev/null; fi
+true
+
 %post
 if [ -x /usr/bin/systemctl ]; then /usr/bin/systemctl try-restart confluent >& /dev/null; fi
 true