reset bucket properties test

depends on https://github.com/basho/riak_core/commit/945019b129e6ed0ba638c66f5f889c9001496755
Ruby Client test working with hard-coded locally built ruby-client gem
Created a riak_test scratch dir for downloading clients
Moved java urls to default config
Added multi_json gem to ruby client test
ruby test: used filename:join/1 where applicable
Ruby Tests: changed format string to plain old string
Fix the bundler invocation so it works in a more isolated fashion.
Merge pull request #84 from basho/jd-ruby-client-tests

Riak Test: Now With Ruby Client Action
Enhancements to loaded upgrade. less dependent on ENV vars
Added warning about ?assertCmd
Added fields to sample config
Fixed mapred_verify test escript/priv issues
bin dir freed from the shackles of /tmp, uh huh...
Added 2i to loaded upgrade test
test_cluster test, which really just builds a cluster and leaves it running... great for developing tests
Tests can now ask the test runner for the test metadata
export rt:build_cluster/3
Added the ability to set platform in riak_test.config
Fixed default RT_DEST_DIR variable