Fix store conversion bug leading to lack of osdmap full versions

This was caused by a bug in the store conversion, introduced in 0.59, resulting from not converting the osdmap full versions.

Commit b7fb4fef372f3225cfd148b24de03062ccbe1dbf fixes this in the monitor.

Commit 61c9a1917adeb1d325c92c061ab1a2f1eaedfd9a adds a tool to fix a converted monitor suffering from this bug, but requires the old-format store (prior to conversion) to perform the actual fix.