CFY-6090 Download to temp directory and copy as logstash user (#434)
CFY-6090 Download to temp directory and copy as logstash user (#434)

This should fix permission problems when running `curl` as some user
different from `root` and `logstash`.
Cloudify-PS/cloudify-manager-blueprints,isaac-s/cloudify-manager-blueprints,cloudify-cosmo/cloudify-manager-blueprints,cloudify-cosmo/cloudify-manager-blueprints,Cloudify-PS/cloudify-manager-blueprints,isaac-s/cloudify-manager-blueprints