Fix newsi relinks ordering bug that occurs only on the master

[markhannum]

Pagelogs are placed on filed-queues in a slightly different order when snapshot isolation is run directly on master. This PR fixes the issue, and adds the 'newsi.testopts' file to the newsi_on_master test.

This is the 8.0 version of https://github.com/bloomberg/comdb2/pull/4601