Add footer config template

## Purpose
* Fixes https://roadmap.entgra.net/issues/10180

## Description
* cdm-config.xml.j2, cdm-config.xml templates are updated from hardcoded values to retrieve values from deployment.toml
* server_name, server_version and current_year are added as variables

* **Usage:** change deployment.toml values when a new version released. This will update the footer

## Related PRs
* proprietary/product-uem#15

Co-authored-by: prathabanKavin <kavinprathaban025@gmail.com>
Reviewed-on: #160
Co-authored-by: Kavin Prathaban <kavin@entgra.io>
Co-committed-by: Kavin Prathaban <kavin@entgra.io>

features/device-mgt/io.entgra.device.mgt.core.device.mgt.basics.feature/src/main/resources/conf/cdm-config.xml

@@ -189,7 +189,7 @@
                 <a href='https://entgra.io' target='_blank'>
                 Entgra
                 </a>
-                IoT Server 5.2.0 |  © 2023
+                UEM Server 5.3.0 | © 2023
                 , All Rights Reserved.
             </FooterText>
             <AppTitle>Entgra</AppTitle>

features/device-mgt/io.entgra.device.mgt.core.device.mgt.basics.feature/src/main/resources/conf_templates/templates/repository/conf/cdm-config.xml.j2

@@ -325,12 +325,16 @@
     <MetaDataConfiguration>
         <WhiteLabelConfiguration>
             <FooterText>
-            &lt;a href='https://entgra.io' target='_blank'&gt;
-              Entgra
-            &lt;/a&gt;
-            IoT Server 5.2.0 |  &#169; 2023
-            , All Rights Reserved.
-            </FooterText>
+                &lt;a href='https://entgra.io' target='_blank'&gt;
+                   Entgra
+                &lt;/a&gt;
+                {% if product_conf is defined %}
+                {{product_conf.server_name}} {{product_conf.server_version}} | &#169; {{product_conf.current_year}}
+                {% else %}
+                Entgra UEM Server
+                {% endif %}
+                , All Rights Reserved.
+                </FooterText>
             <AppTitle>Entgra</AppTitle>
             <WhiteLabelImages>
                 <StoragePath>repository/resources/whitelabel</StoragePath>