Draft: manifest: Add meta-mono
To test an evaluate Mono on Dunfell add meta-mono to the layer list. Use the latest dunfell branch commit http://git.yoctoproject.org/cgit/cgit.cgi/meta-mono/commit/?h=dunfell&id=89f6d12ddd6df00840838fa230c3197d7856aaab
BCS 01206-000002
Change-Id: Idea335805b29e4c36cd7747fa83e4aefc313b330
Edited by Tobias Kahlki