Refactoring code for easy migration to pyvcloud code.
Refactoring code for easy migration to pyvcloud code.

geokala/tosca-vcloud-plugin,kemiz/tosca-vcloud-plugin,cloudify-cosmo/tosca-vcloud-plugin,denismakogon/tosca-vcloud-plugin,vmware/tosca-vcloud-plugin,nmishkin/tosca-vcloud-plugin