CLOUDIFY-2545 schema support for passing 'folder' key inside plugin declaration
CLOUDIFY-2545 added test for 'folder' declaration
CLOUDIFY-2545 added test that parses blueprint with a plugin that has a 'folder' property
Merge pull request #28 from CloudifySource/feature/CLOUDIFY-2545-blueprint-plugins

Feature/cloudify 2545 blueprint plugins
Merge branch 'develop' into feature/CLOUDIFY-2531-multi-instance