CLOUDIFY-2431 state workflow and participant use of return value instead of exception
CLOUDIFY-2431 modify state workflow
Merge pull request #138 from CloudifySource/feature/CLOUDIFY-2431

replate state workflow with return values instead of exception
CLOUDIFY-2459 add sanity
Merge pull request #139 from CloudifySource/feature/CLOUDIFY-2459-hello-world-sanity

Add sanity for cloudify-hello-world on openstack
CLOUDIFY-2463 update sanity to match new hello world structure
Merge pull request #141 from CloudifySource/feature/CLOUDIFY-2463-hello-with-type-impl

Update sanity to match new hello-world structure
CLOUDIFY-2454 plugins python logger integration and events formatting
Merge branch 'develop' into feature/CLOUDIFY-2454-python-logger