Set icon for custom dashboard

Path to add images : /src/icons

Add two images with name in following format

<dashboard-name>-icon.png
<dashboard-name>-icon-active.png

Examples: If your dashboard name is slice then you will add the images with the name as slice-icon.png slice-icon-active.png

Note: If you don't add the custom images, then dashboard will use the default images stored at /xos/core/xoslib/static/images