RUBY-700 Adding ivp6 support
RUBY-700 Add ipv6 option to cluster manager for rs testing
minor: fixing prefixes in new test dbs so that they get cleaned up correctly
Merge pull request #351 from brandonblack/test-fix

minor: fixing prefixes in new test dbs so that they get cleaned up
Merge branch '1.x-stable-ruby-676' of https://github.com/gjmurakami-10gen/mongo-ruby-driver into gjmurakami-10gen-1.x-stable-ruby-676
RUBY-713 Use createIndexes command when available