Add an autorequires on ruby-json

mongo_replset provider requires json library
for which this commit adds a autorequires
dependency.
Merge pull request #111 from pkilambi/master

Add an autorequires on ruby-json
Add tests for replsets
Raise error correctly on database timeout
Allow mongodb bind_ips to take a string
Update autorequires
Update replsets to have self.instances
Rewrite provider to use flush
Correct package name and logpath
fixup replset tests
Patch server test for tengen port changing being broken
Prepare 0.8.0 release.
Add docs and dev comments
Merge pull request #113 from hunner/test_replsets

Test replsets
Merge branch 'master' into 080-release
Add additional details.
Merge pull request #118 from apenney/080-release

Prepare 0.8.0 release.