ISPN-3655 Transactional OL should configure RR and writeSkew by default

* This is necessary in order to make sure conditional replace methods
behave as expected in transactional caches without extra RR and
writeSkew configurations.
* As a result of changing this default behaivour, so tests started
failing, mostly because they're designed to use read committed and
not do write skew checks. Those tests' configuration has been adjusted
accordingly.