fix requirement in the spec and gemspec

plugin do not use json, no mention of rspec or mocha in the code
or rakefile, and that's the stickshift-common gem that's used
Fix gemspec for missing and incorrect requirement

- json is only used for tests
- rails is used in ./lib/remote_user_auth_engine.rb
- openshift-origin-common in ./config/initializers/openshift-origin-auth-remote-user.rb
Move plugins.d/README from the node to the broker

The /etc/openshift/plugins.d/ directory and the README file therein are
related to the broker, not the node.

This commit also modifies the spec file so that the README file is actually
shipped in the RPM.
Separate config from environments
Merge remote-tracking branch 'origin/master' into separate_config_from_environments
Add a test case for configuration to ruby values
Bug 87442

Avoid confusion arising from app-root/repo/node_modules/read.me implying that read.me file should not be removed when force_clean_build marker is present.

app-root/repo/node_modules/read.me is now removed, and app-root/repo/README.md will point to updated documentation at https://github.com/openshift/origin-server/blob/master/cartridges/openshift-origin-cartridge-nodejs/README.md, which explains the purpose of the node_modules directory.
Move v2 mysql setup invocation marker to gear data directory
The v2 cartridge needs to pull in the ruby-1.8 dependencies as well

Also, I sorts these more alphabetically by section.
Bug 952513
Bug 888714 - Remove .gitkeep and .gitignore
Merge pull request #2161 from pmorie/dev/v2_mysql

Merged by openshift-bot
Merge pull request #2162 from brenton/specs3

Merged by openshift-bot
Merge pull request #2163 from bdecoste/master

Merged by openshift-bot
Adding V2 Format to all v2 cartridges
Merge pull request #535 from mscherer/fix_uplift_gem

Merged by openshift-bot
Clean up test executions
app_dns should belong to only one group instance
Merge pull request #2164 from smarterclayton/bug_888714_remove_git_files

Merged by openshift-bot
Merge pull request #2165 from calfonso/master

Merged by openshift-bot