Fix repair_test
Use proper CL instead of sleep in repair_test
Add auth tests
Merge pull request #10 from iamaleksey/auth_test

Add auth tests
Refactor auth tests
Merge pull request #11 from iamaleksey/refactor_auth_test

Refactor auth tests
More sleep time for default user setup
Watch the log for default su setup in auth test
move token range test to 1.2
remove crap
Fix create/alter test
Few more CQL tests
Fixes the upgrade script.

* Removes tests earlier than 1.1.
* Serializes the process with which nodes are brought down and upgraded.
* Adds a second test for a mixed cluster, which is currently failing due
to CASSANDRA-5334.
Fix KerError in Tester consturctor
Speed up system_auth_ks_is_alterable_test
Enables whole-cluster upgrade test and tests against casandra-1.2 HEAD.
Use quorum in counter_test
Make sure rolling upgrade test uses the same partitioner through the upgrade.
explicitly shutdown the cluster
remove redundant upgrade test