restart on upgrade default to false

packaging/deb/default/grafana-server

@@ -14,4 +14,4 @@ CONF_DIR=/etc/grafana
 
 CONF_FILE=/etc/grafana/grafana.ini
 
-RESTART_ON_UPGRADE=true
+RESTART_ON_UPGRADE=false

packaging/rpm/sysconfig/grafana-server

@@ -14,4 +14,4 @@ CONF_DIR=/etc/grafana
 
 CONF_FILE=/etc/grafana/grafana.ini
 
-RESTART_ON_UPGRADE=true
+RESTART_ON_UPGRADE=false