Add scrub_test and repair_test to rados basic suite

Signed-off-by: David Zafman <david.zafman@inktank.com>
repair_test: Wait for OSDs to come up before proceeding with test

Signed-off-by: David Zafman <dzafman@redhat.com>
Merge pull request #234 from ceph/wip-dzaddscrub

Add scrub_test and repair_test to rados basic suite

Reviewed-by: Loic Dachary <ldachary@redhat.com>