osd: Optimized EC pools - fix overaggressive assert in read_log_and_missing

osd: Optimized EC pools - fix overaggressive assert in read_log_and_missing

Non-primary shards may not be updated because of partial writes. This means
that the OI verison for an object on these shards may be stale. An assert
in read_log_and_missing was checking that the OI version matched the have
version in a missing entry. The missing entry calculates the have version
using the prior_version from a log entry, this does not take into account
partial writes so can be ahead of the stale OI version.

Relax the assert for optimized pools to require have >= oi.version

Signed-off-by: Bill Scales <bill_scales@uk.ibm.com>
(cherry picked from commit 74e138a7c1f8b7e375568c6811a60f6bdad181b3)