test skeleton implemented
working Json export/import
Implemented json_tools dtest
refactored to remove unnecessary code
pushed file i/o to CCM
moved file i/o back into the test
user types can't contain counters
Merge branch 'master' into more_user_types_tests
test for user type as clustering col
pep8 and unused imports
Test for 7707
Merge branch 'master' of github.com:riptano/cassandra-dtest
set cluster cassandra dir right after nodes are upgraded
Added sleep after thrift call

CASSANDRA-7718
Old thrift tests from C* source, refactored to become a dtest.
Another attempting at fixing CASSANDRA-7599
Remove cruft
Tests for CASSANDRA-7395
Full system log message shown
hack to fix missing topology for now