Merge branch 'usr-is-merged' into 'master'

Add usr-is-merged to the list of offline packages

See merge request kalilinux/build-scripts/live-build-config!27

simple-cdd/profiles/offline.downloads

@@ -1,3 +1,5 @@
+# Add packages required by debootstrap (cf. #51)
+usr-is-merged
 # Add packages required for virtualization support (installed by
 # /usr/lib/finish-install.d/08hw-detect) including their recommends
 hyperv-daemons