saving uncommitted changes in /etc prior to dnf run

dhcp/dhclient.d/chrony.sh

@@ -3,6 +3,9 @@
 SERVERFILE=$SAVEDIR/chrony.servers.$interface
 
 chrony_config() {
+	# Disable modifications if called from a NM dispatcher script
+	[ -n "$NM_DISPATCHER_ACTION" ] && return 0
+
 	rm -f "$SERVERFILE"
 	if [ "$PEERNTP" != "no" ]; then
 		for server in $new_ntp_servers; do
@@ -13,6 +16,8 @@ chrony_config() {
 }
 
 chrony_restore() {
+	[ -n "$NM_DISPATCHER_ACTION" ] && return 0
+
 	if [ -f "$SERVERFILE" ]; then
 		rm -f "$SERVERFILE"
 		/usr/libexec/chrony-helper update-daemon || :