Catch all exceptions when indexTs fails

Report *any* sort of exception to the Gerrit error log
when the update of the latest index timestamp fails for any reason.

The update of indexTs is not severe enough to break the entire
indexing chain of events. Instead of having more diagnostics on what
failed and why it is far more useful than breaking the execution.

It isn't generally a good practice to catch RuntimeExceptions,
however, in this case, it is more "reporting them" rather than trying
to recover.

Change-Id: I3fb6c4e6a5b67d7ac0cdf19a1afa0695bfd0da16
1 file changed