get-config: allow a local override in /etc/sysconfig/labmanager.

bin/get-config

@@ -6,6 +6,14 @@ RETRY_DELAY=5
 NORMAL_CONFIG_NAME=normale
 DEBUG=0
 
+# Sysadmin can override local vars here:
+CONFFILE=/etc/sysconfig/labmanager
+
+#  Load configuration override if present:
+if [ -e CONFFILE ]; then
+    . ${CONFFILE}
+fi
+
 if [[ "-d" == "$2" ]]; then
     DEBUG=1
 fi