Improve workflow generator.
Improve readme file with build instructions.
Do not store plugin binary in ElasticSearch (as it manages all as base64 binary and creates a lot of overheads in ES)
Fix new plugin management.
Merge branch 'develop' of https://github.com/alien4cloud/alien4cloud into develop
Cleanup plugin management (remove old fetch context that is now unused).
Move dagre-d3 dependency out of codebase.
 - update fastconnect repository access to get artifacts using http rather than https (this should avoid certificate issues).
 - Plan generation can be done per node.
Fixed desactivated IT tests
Merge remote-tracking branch 'origin/develop' into develop-vuminhkh
ALIEN-538 : As a USER I want to be able to use Cloudify 3 as a cloud deployer.
Add touch to FileUtil