Update firmware and config server paths in XML

These two values state Mandatory in the template so added a default value
- grandstream_dial_timeout
- grandstream_web_access_mode

resources/templates/provision/grandstream/ht814/{$mac}.xml

@@ -83,11 +83,21 @@
 
     <!-- # Firmware Server Path -->
     <!-- # Server address -->
-    <P192>{$grandstream_firmware_path}/ht814/</P192>
+    <P192>{$grandstream_firmware_path}/ht814/{$firmware_version}</P192>
+    {elseif isset($grandstream_firmware_path)}
+    <P192>{$grandstream_firmware_path}/ht814</P192>
+    {else}
+    <P192>{$domain_name}{$project_path}/app/provision</P192>
 
     <!-- # Config Server Path -->
     <!-- # Server address;  -->
+    {if $grandstream_config_server_path=="none"}
+    <P237></P237>
+    {elseif isset($grandstream_config_server_path)}
     <P237>{$grandstream_config_server_path}</P237>
+    {elseif isset($domain_name)}
+    <P237>{$domain_name}{$project_path}/app/provision</P237>
+    {/if}
 
     <!-- # XML Config File Password -->
     <!-- # String; between ascii values 33 and 126 -->
@@ -945,7 +955,11 @@
     <!-- # No Key Entry Timeout. Default - 4 seconds. -->
     <!-- # Number: 1-15 -->
     <!-- # Mandatory -->
+    {if isset($grandstream_dial_timeout) }
     <P85>{$grandstream_dial_timeout}</P85>
+    {else}
+    <P85>4</P85>
+	{/if}
 
     <!-- # Early Dial. 0 - No, 1 - Yes (use "Yes" only if proxy supports 484 response) -->
     <!-- # Number: 0, 1 -->
@@ -1575,7 +1589,11 @@
     <!-- # Web Access Mode. 0 - HTTPS, 1 - HTTP. -->
     <!-- # Number: 0, 1 -->
     <!-- # Mandatory -->
+    {if isset($grandstream_web_access_mode) }
     <P1650>{$grandstream_web_access_mode}</P1650>
+    {else}
+    <P1650>0</P1650>
+    {/if}
 
     <!-- # HTTP Web Port. Default HTTP is 80. -->
     <!-- # Number: 1 to 65535 -->