create AlarmConfig.installSave file

In the cases where AlarmConfig.xml is zero'd out, if this happens on a single server deployment you do not have a working copy to use from another node. The only solution is to do another install to get the file. A simpler solution would be to create a copy of AlarmConfig.xml as AlarmConfig.xml.installSave like we do for ColumnStore.xml. It's unlikely someone would change this so copying the installSave would help anyone recover from the case where AlarmConfig.xml get's zero'd out. Even when that bug gets fixed it's probably still helpful to have an installl time reference file