Swap openSUSE 42.3 to 15

Task-number: QTQAINFRA-2067
Change-Id: I71f79181704d6ce8faac0019f6d7a5016b0ecb5e
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>
Reviewed-by: Heikki Halmet <heikki.halmet@qt.io>

coin/provisioning/common/linux/disable-ntp_linux.sh

@@ -39,6 +39,8 @@ echo "Disable Network Time Protocol (NTP)"
 
 if uname -a |grep -q "Ubuntu"; then
     sudo timedatectl set-ntp false
+elif cat /etc/os-release | grep "PRETTY_NAME" | grep -q "Leap 15"; then
+    (sudo systemctl stop chronyd && sudo systemctl disable chronyd)
 else
     (systemctl &>/dev/null && sudo systemctl disable ntpd) || sudo /sbin/chkconfig ntpd off
 fi