Merge pull request kubernetes#12401 from Huawei-PaaS/issue-azure-install

Modify the salt master's log config file name

Author: a-robinson

cluster/azure/templates/salt-master.sh

@@ -54,7 +54,7 @@ log_level: debug
 log_level_logfile: debug
 EOF
 
-cat <<EOF >/etc/salt/master.d/log-level-debug.d
+cat <<EOF >/etc/salt/master.d/log-level-debug.conf
 log_level: debug
 log_level_logfile: debug
 EOF