Moved to host overlay and added csh support

Signed-off-by: jcsiadal <jeremy.c.siadal@intel.com>

overlays/host/etc/profile.d/ssh_setup.csh

@@ -0,0 +1,27 @@
+#!/bin/csh
+
+## Automatically configure SSH keys for a user on C SHell login
+## Copy this file to /etc/profile.d along with ssh_setup.sh
+
+set _UID=`id -u`
+
+if ( $_UID < 500 && $_UID != 0 ) then
+    exit
+endif
+
+
+if ( ! -f "$HOME/.ssh/config" && ! -f "$HOME/.ssh/cluster" ) then
+    echo "Configuring SSH for cluster access"
+    install -d -m 700 $HOME/.ssh
+    ssh-keygen -t rsa -f $HOME/.ssh/cluster -N '' -C "Warewulf Cluster key" >& /dev/null
+    cat $HOME/.ssh/cluster.pub >>! $HOME/.ssh/authorized_keys
+    chmod 0600 $HOME/.ssh/authorized_keys
+
+    touch $HOME/.ssh/config
+    echo -n "# Added by Warewulf " >>! $HOME/.ssh/config
+    (date +%Y-%m-%d >> $HOME/.ssh/config) |& /dev/null
+    echo "Host *" >> $HOME/.ssh/config
+    echo "   IdentityFile ~/.ssh/cluster" >> $HOME/.ssh/config
+    echo "   StrictHostKeyChecking=no" >> $HOME/.ssh/config
+    chmod 0600 $HOME/.ssh/config
+endif