Remove vpn client keys

src/freedombone-app-vpn

 SHOW_ON_ABOUT=0
 
 OPENVPN_SERVER_NAME="${PROJECT_NAME}-vpn"
+OPENVPN_KEY_FILENAME='vpn.ovpn'
 
 vpn_variables=(MY_EMAIL_ADDRESS
                LOCAL_NETWORK_STATIC_IP_ADDRESS
     fi
     firewall_deny_forwarding
     remove_completion_param install_vpn
+
+    # remove any client keys
+    for d in /home/*/ ; do
+        USERNAME=$(echo "$d" | awk -F '/' '{print $3}')
+        if [ -f /home/$USERNAME/$OPENVPN_KEY_FILENAME ]; then
+            shred -zu /home/$USERNAME/$OPENVPN_KEY_FILENAME
+        fi
+    done
 }
 
 function create_user_vpn_key {
         exit 682523
     fi
 
-    user_vpn_cert_file=/home/$username/vpn.ovpn
+    user_vpn_cert_file=/home/$username/$OPENVPN_KEY_FILENAME
 
     cp /usr/share/doc/openvpn/examples/sample-config-files/client.conf $user_vpn_cert_file
     sed -i "s|remote .*|remote $DEFAULT_DOMAIN_NAME 1194|g" $user_vpn_cert_file