test: Increased timeout for recover_mnesia_SUITE
test: Increased timeout for recover_mnesia_SUITE

recover_mnesia_SUITE:test_make_ring fails quite regularly for R=32 on
the buildbot due to timeouts. Is it just too slow or does it stop making
progress?

scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris,scalaris-team/scalaris