Update test-image-disk

Add NetworkManager for better remote debugging capabilities

Author: schaefi

build-tests/x86/tumbleweed/test-image-disk/appliance.kiwi

@@ -63,6 +63,8 @@
         <package name="timezone"/>
         <package name="dracut-kiwi-oem-repart"/>
         <package name="dracut-kiwi-oem-dump"/>
+        <package name="NetworkManager"/>
+        <package name="systemd-resolved"/>
     </packages>
     <packages type="bootstrap">
         <package name="gawk"/>