Comment 9 for bug 1774279

Raising Ubuntu task; it would be nice if we could tell the ceph-mon cluster how many OSD's there *will* be, rather than it defaulting to '3' if there are no OSD's currently checked in.

This will require a new configuration option and adoption by the ceph project.

For a charm based deployment, the value of 'in' osds is unreliable until the cloud is fully deployed; having this trip hazard is non-ideal.