Bind OnlineReindexer.Factory in LuceneIndexModule

The OnlineReindexer.Factory is only bound in MultiVersionModule.

This causes some of the acceptance tests to fail with the error
"no implementation bound" because the SingleVersionModule is being
used, which does not bind OnlineReindexer.Factory.

Bind it in LuceneIndexModule instead, so it's used in both cases.

Change-Id: I6df22bb405621485e5dcba2a5d0e0a14de372f8a
1 file changed